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From YouTube: SJAA Imaging SIG 1 19 2021
Description
This month Glenn Newell, SJAA Director & leader of the SJAA Imaging Workshops will be hosting our meeting! It will be an online, open discussion about anything and everything that we’ve been up to lately.
Paul Mahany: Latest Images and mods from a RASA 11"
Hy Murveit: A new Polar Alignment Routine (doesn't need Polaris) comming to Kstars/Ekos
Glenn Newell: SJAA's new Vixen 140SS
Steve Sells: First light with new gear
A
A
Okay,
and
this
is
a
little
video
update
at
the
beginning
of
the
clip
here.
We
had
some
technical
issues
during
the
recording
of
the
meeting
and
while
we're
all
learning
on
switching
from
google
meet
to
zoom,
and
so
I
have
edited
out
the
technical
glitches
and
we
didn't
have
audio
at
the
beginning,
et
cetera,
et
cetera
in
the
recording.
So
I'm
re-recording
this
for
you.
So
by
way
of
introduction.
A
First,
we
have
paul
mahoney,
a
club
member
who
is
going
to
share
some
images
from
his
raza
11
that
he
takes
from
his
observatory
near
yosemite,
calls
it
manzanita
observatory
and
some
of
the
modifications
and
adaptations
and
whatnot
that
he's
done
to
that
raza
to
get
it
to
behave
properly.
Those
are
real
race,
car
type,
scopes,
they're
very
finicky
and
take
take
a
lot
of
work
to
be
at
you
know,
f3
or
whatever
the
the
f-stop
is
super
fast.
So
first
paul
we'll
talk
about
that.
A
A
There's
a
discussion
of
telescope.live,
which
we
think
will
be
our
next
speaker,
will
will
be
alex
from
from
telescope
live,
and
I
need
to
add
one
thing:
I've
learned
since
the
recording
is
that
their
scheduling
system
does
allow
you
to
pick
a
particular
hour
on
a
particular
scope.
Now
I
used
it
for
the
first
time
this
morning,
their
their
version,
2.0
interface,
is
a
little
different
than
it
was
previously.
So
I
need
to
correct
my
myself
on
that.
So
keep
that
in
mind
when
you
listen
to
that
last
piece
of
the
video.
B
B
B
So
that
when
I
took
this
picture,
I
saw
this
interesting
reflection
nebulae
off
of
here,
and
so
I
decided
to
try
and
take
a
picture
of
that.
So,
let's
see
where
to
go,
oh
there,
it
is
so
I
just
moved
over
a
little
bit
and
got
this
interesting,
pretty
blue
color
going
so
obviously
it's
a
real
rich
area
in
the
winter
milky
way
it's
very
pretty,
and
so
that
was
kind
of
one
of
the
things
that
I
I
did.
B
B
B
B
B
Again
this
is
a
difficult
picture
to
do
simply
because
of
the
heavy
interference
from
the
belt
starter.
Second
magnitude
stars,
and
here
we're
going
down
past
20th
magnitude,
stars
and
yield.
So
this
is
a
shot
that
I
deliberately
tried
to
go
for
to
do
simply
because
I
like
to
explore
these
things
and
see.
What's.
B
There,
yes,
it's
very
close
to
it.
You
go
to
the
third
star
in
the
belt
and
ta-da
and
carry
on
from
that.
So
it's
basically
just
a
whole
field
over
yes,
and
as
you
can
see,
it's
sort
of
bracketed
in
back
between
no
death
star,
it's
it's
a
challenge,
really
bright
stars
and
lots
of
wonderful
things
to
look
at
there,
and
this
is
one
that
last
time
I
tried
to
present
this.
B
B
B
This
this
was
taken
a
couple
years
ago.
What
I
found
is,
I
really
had
to
do
some
interesting
things
to
the
top
end
to
this
to
this
telescope,
to
make
it
work
better.
One
year
I
think
rings
were
very,
very
solid,
extremely
solid,
I
would
say,
really
reduces
differential
flexure
all
that
kind
of
stuff.
They
really
clamp
that
tube,
in
fact,
they're
kind
of
difficult
to
work
with.
If
you
want
to
move
the
telescope
around
much,
so
it's
kind
of
something
you
set
up
carefully
and
forget
about
it.
B
B
B
So
there
are
two
problems.
The
losses
I
saw
one
was
the
the
dew
shield,
which
was
a
little
bit
of
fragile
and
the
other
one
was
the
nose
assembly
that
allows
the
camera
to
be
coupled
to
the
roster
theoretically,
without
moving
well,
as
I
may
have,
as
I've
shown
in
a
couple
of
the
emails
I
sent
out
some
time
ago.
The
problem
with
the
roger
had
a
big
honking
nose
piece
that
easily
guard
and
could
not
be
undone
and
it
required
two
trips
to
spawn
to
fix,
which
was
a
pain
in
the
ass.
B
So
I
decided
to
do
something
about
that
and
change
the
entire
mechanical
setup
of
the
nose
piece.
So
this
is
what
I'm,
starting
with
I
made
two
of
these.
This
is
obviously
this
is
a
3
16,
thick
aluminum
that
I
haven't
had
in
my
garage,
and
this
is
how
I
was
laying
it
out
and
cutting
it
up,
and
this
is
me
with
my
drill
press
whacking
away
at
it.
B
I'm
roughing
it
now.
I
don't
have
a
lace
or
any
of
this
stuff,
but
I
do
have
a
lot
of
wood
working
tools,
so
it's
kind
of
like
how
can
I
do
this
with
woodworking
tools
and
handles,
and
so
this
is
me,
I'm
tapping
some
holes
in
there.
Hopefully,
you'll
see
how
it
works,
and
this
is
surrounding
it
on
a
sanding
disk,
a
lot
of
fun
hard
on
the
sandpaper
I'll.
Tell
you
that-
and
this
is
I'm
roughing
it
out.
The
inside
outside
fits
inside
the
the
the
coupler
that
the
celestron
has
provided.
B
B
B
B
Tighten
these
three
screws
and
the
thing
becomes
very
rigid
and,
of
course,
since
this
is
all
file
fit,
I
was
able
to
get
very
close
tolerances
between
the
outside
of
this
ring
and
the
coupler.
So
it's
it's.
It's
very
tight.
It's
less
well
less
than
a
millimeter,
an
ability
to
move
the
inside
of
this
ring
is
tapered
so
that
it
clamps
down
on
the
on
the
tapered.
E
B
E
E
C
B
B
So
I've
completely
done
a
complete
run
around
of
how
this
thing
works
actually,
and
it
works
quite
well,
so
I
haven't
had
to
take
it
back
to
celestron
again
and
get
and
have
them
get
out
their
pipe
wrenches
on
okay.
So
now
we're
back
to
the
to
the
digital-
and
this
is
what
I
figured
out
to
the
camera-
the
qhy
268c
camera.
B
One
of
the
reasons
for
why
that
is
is
because,
when
you
put
a
dew
shield
on
the
celestial
roster
here
and
the
cam
of
course,
vince
sucks
in
air
from
the
douche
shield
runs
it
through
the
peltier
and
all
that
stuff,
and
then
they
exhaust
hot
air
back
into
the
dew
shield,
which
then
sucks
in
the
hair.
That's
heated
up!
This
is
cycle.
You
see
what
I'm
saying
this
keeps
recirculating
the
already
used
coolant
of
the
air.
B
B
So
this
helps
out
with
that
cooling,
the
camera,
so
it
works
fine
now.
So
that
shows
that
now
I've
best
done
is
is
that,
as
I
mentioned
earlier,
this
dew
collector
this
due
shield
split,
and
so
it
became.
Rather
in
fact,
you
can
see
it
see
how
this
little
round
part
not
quite
right,
how
it
jog
just
split
there.
You
can
see
it
right
through
there,
so
I
don't
have
a
picture
of
it.
B
B
B
E
B
D
Okay,
all
right
I'll,
first
just
talk
for
about
a
minute
and
then
share
my
screen,
so
k-stars
has
an
existing
polar
alignment
tool.
I
assume
everyone's
familiar
with
polar
alignment,
so
I
won't
describe
that
and
josem
mutlock
wrote
it
a
few
years
ago
and
I
made
some
changes
to
it
recently
and
the
the
primary
change
I
mean
from
a
user's
point
of
view.
It
looks
almost
identical,
but
the
difference
is
previously
to
polar,
align
like
almost
every
tool
unless
you're
drift
aligning
you
have
to
point
at
the
pole.
D
In
our
case
the
northern
celestial
pole-
and
you
know
you
point
near
there
and
you
do
a
little
magic
like
with
your
pole,
master
rotating
and
clicking
on
points
on
the
screen
and
you
and
it
assists
you
in
adjusting
your
altitude
and
azimuth
knobs
to
get
your
amount,
polar
aligned,
and
so
the
basic
change
I
made
was
internal
which
allows
you
now
to
point
anywhere,
and
so
you
got
a
big
tree
in
the
north.
Who
cares
you
got?
You
know
you're.
D
You
only
have
a
south
a
southern
view
and
you're
in
the
northern
hemisphere.
Nobody,
it
doesn't
matter
anymore.
You
can
still
polar
align,
so
I
thought
I
realized.
This
was
possible.
You
know
with
the
the
new
world
of
plate
solving
right,
not
so
new.
This
kind
of
stuff
should
be
possible
and
the
the
math
didn't
come
naturally
to
me,
but
I
was
able
to
take
advantage
of
some
preliminary
work
that
this
guy
chris
rowling
a
k.
D
So
that's
what
I'm
going
to
demo.
Basically
just
that,
so
let
me
share
my
screen.
Oh
and
I
should
mention
I
screwed
up
my
polar
alignment.
I
walked
out
to
my
telescope.
In
fact,
after
we
do
the
early
parts
of
this,
where
I
don't
have
to
be
near
the
telescope
I'll,
take
the
chance
and
move
my
laptop
outside
and
see.
D
D
So
I'm
in
the
tab,
I'm
in
the
appropriate
tab
already
and
you
can
see
this
is
the
a
lot
with
so-called
alignment
tab
which
does
plate
solving
and
polar
alignment,
and
you
might
see,
I
assume
you
can
see
my
mouse
where
I'm
pointing
that
I'm
in
this
sort
of
polar
alignment
sub
tab,
and
then
we
got
the
the
usual
sky
map
here
on
that
side
and
I'm
not
parked,
which
is
a
good
thing.
So
that's
there
you
go
so
I'm
going
to
move
the
scope
to
here.
D
I
don't
know
if
you
see
sort
of
down
here
is
the
deck
reading
and
I'll
move
it
to
60
degrees-ish
near
the
meridian
so
move
it
should
start
moving
there.
It
goes,
and
so
you
know,
of
course
we
can't
see
my
telescope,
but
it's
we
can
see
the
representation
on
the
screen
and
there
it
goes
moving,
hopefully
to
the
meridian
near
there,
and
I
know
I
have
free
sky
there.
I
mean
I
have
free
sky
at
the
northern
pole
too,
but
you
know
this
is
a
demo
of
that.
D
D
So
so
I'm
gonna
this.
This
is
good.
You
know
I.
I
have
60
degrees
of
westward
motion.
I've
actually
tried
this
with.
You
know,
20
degree
in
between
the
snapshots
and
that
works
fine
too,
and
why
not
slew
at
a
fast
speed.
So
I'll
just
hit
start,
and
you
know
like
a
polemaster,
which
I
imagine
many
of
you
familiar
with
it'll
take
three
pictures,
but
I
don't
have
to
manually
move
my
scope
since
k-stars
is
you
know,
control
can
control
the
mount
it
it
does
that
so
you
can
see
right
now.
D
It's
exec!
Let
me
back
out.
This
is
the
picture
it
took
and
now
it's
doing
the
first
mount
we
should.
You
should
be.
If
you
look
at
the
sky
map,
you'll
see
the
amount
move
and
now
it's
taking
the
second
picture.
It
also
did
a
plate
solve
that
stuff
gets
displayed.
You
know
the
various
coordinates
get
displayed
over
here
capture
the
image
it's
doing
a
plate
solve
in
this
case.
D
With
s
tap,
you
have
a
choice
in
k
stars,
but
anyway
I
use
ask
tab
and
then
now
the
mount
is
moving
again
and
it
should
wind
up
60
degrees,
south
of
the
meridian.
I
guess
not
south
down
altitude
wise
and
it's
taking
the
third
picture
and
the
math
is
interesting.
I
have
to
say
it
stretched
my
math
brain
to
do
this,
but
basically
I'll
give
you
a
one
minute
description.
D
After
it
prints
out
the
results
of
what
it's
doing
so
there
you
go,
I
got
a
polar
error,
not
surprisingly
about
a
half
a
degree
I
turned
like.
I
say
I
did
about
an
eighth
turn
on
my
altitude,
knob
and
similar
on
my
azimuth.
So
I
have
yeah
18
minutes
on
both
polar
error
and
we're
going
to
zoom
in
here
and
then
I'm
going
to
talk
a
little
bit
about
math.
So
this
image
is
interesting.
Can
you
folks
see
there's
a
triangle
on
the
screen?
It's
got
a
green,
a
yellow
and
a
purple
side.
D
Sides,
that's
good,
so
what
it's
telling
you?
What
you
should
do
at
this
point
is
pick
a
star.
I'm
going
to
pick
this
nice
bright
star
and
click
on
it
and
it'll
move
it
to
that,
and
what
I
got
to
do
is:
first,
you
move
the
star,
you,
you
turn
the
altitude
knob
to
move
not
yet,
but
soon
I'll
get
it
to
take
pictures
every
couple,
a
second
or
two
and
you
you
move
the
altitude
knob
and
it
and
if
I
move
it
in
the
right
direction,
it
should
go
along
that
yellow
line.
D
D
You
know
as
well,
but
I
don't
just
a
little
bit
about
the
math
when
it
took
the
three
pictures
it
it
you
know,
got
coordinates
and
you
could
think
of
those
you
know
got
rn
dec
coordinates
and
you
could
think
of
those
as
vectors
from
the
center
of
a
sphere
that
you
know
unit
vectors
that
hit
the
sphere
and
you
could
think
of
the
three
points
that
were
touched
on
the
the
sphere.
You
know
the
celestial
sphere,
that's
a
you
know,
not
really,
but
you
could
think
of
that.
D
And
so
that's
the
math.
That's
one
of
the
two
tricky
things
is
to
to
understand
how
you
know
how
from
three
plate
solves.
You
can
get
your
axis
of
rotation
and
that's
the
answer.
You
know
you
define
three
points
on
the
sphere:
you
sort
of
cut
it
with
a
plane,
the
normal
to
that
plane,
points
to
the
pole.
D
If
that
doesn't
make
sense
well,
it
didn't
make
sense
to
me
either
for
a
day
or
two
until
I
you
know
let
it
settle
in
my
brain,
but
that
got
to
work
and
then
the
next
tricky
bit
of
math
was
okay.
Now
you
have
some
arbitrary
point
on
a
sphere
and
you
want
to
rotate
it
by
that.
You
know
you.
Let's
say
you
rotate,
the
the
pole
part
by
you,
know
so
much
in
altitude
and
so
much
an
azimuth.
D
How
does
that
affect
a
random
point
on
the
sphere
and
that
defines
these
correction
lines
and
yeah
anyway
a
day
of
googling,
and
I
I
finally
got
enough
math
and
me
to
solve
that,
but
that
was
the
harder
one
for
me.
Okay,
so
here
we
are,
and
now
I'm
going
to
hit
the
next
button
because
I'm
happy
with
that
star,
although
I
could
change
it
at
any
point,
and
now
it
says
right
here
you
know
adjust
the
altitude
along
the
yellow
line
and
the
azimuth
along
the
green
line.
D
D
D
D
D
D
D
D
So
so
josem
didn't
have
these
yellow
and
green
lines.
He
just
had
the
purple
vector
and-
and
you
know
you
had
to
move
your
star
along
the
vector
to
the
right
place
and
the
interesting
thing
you
know
at
the
pole,
the
azimuth
and
altitude
controls
are
perpendicular,
so
it
made
perfect
sense,
but
I
discovered
that
when
you
move
away
from
the
pole,
the
azimuth
and
altitude
directions
are
no
longer
perpendicular,
as
you
could
see
here
and
they
can
get
worse,
and
so
it
actually
turned
out
to
be
a
that's.
D
A
D
E
D
Well
there
you
go,
I
mean
people,
you
know
like
I,
you
know
I
have
an
active
thread
on
the
k-stars
forum
and
people
are,
you
know
talking,
I'm
going
to
call
that
a
day
people
are
talking
about.
You
know.
Oh
well,
you
know
things,
you
know
the
field
rotates
during
the
time
you
do
polar.
I
mean
give
me
a
break,
that's
well
below
the
noise
of
this
system.
Okay,
but
you
know
I
mean,
look
hey.
I
shouldn't
complain
they.
I
really
do
appreciate
them.
D
D
D
D
D
Warning
this
could
cause
your
telescope
to
cross
the
meridian.
I'm
really
proud
of
that.
Okay
cancel.
We
don't
want
to
do
that.
I
appreciate
my
telescope,
but
look
at
that.
My
screen!
Well,
okay,
there
we
go
so
we'll
change
that
to
25
degrees,
east
and
start,
and
it's
just
going
to
do
another
sol.
I
mean
another,
take
another
three
images
climb
back
up
toward
the
meridian
and
hopefully
we'll
get
a
much
lower
polar
alignment,
error
and
that'll
be
the
end
of
my
show
if
it
succeeds.
Otherwise,
you'll
watch
me
code.
D
D
D
Term
right
yeah,
I
don't
know-
what's
actually
what's
happening
now-
is
that
vnc
is
not
updating.
Oh,
so
it's
doing
all
this
stuff.
Hopefully
vnc
will
come
back.
I
can
see
from
my
shell
that
it's
not
pinging
my
telescope,
that
is
my
biggest
okay.
It's
it's
back.
I'm
now
pinging
at
five
milliseconds.
D
Yes,
oh
look
at
that
see.
That's
solver
failed!
Okay,
so
you
know
what
happened.
Is
we
froze
and
probably
something
I'm
so
what
I'm
going
to
do
is
and
and
then
that's
the
last
thing
I
have
to
work
on.
So
what
I'm
going
to
do
is
manually,
move
it
back
up
here
toward
the
meridian
and
then
solve
west
again
and
okay,
so
I'll.
Stop
that
we'll
go
back
west
and
start
another
one
yeah.
The
issues
that
remain
are
not,
as
far
as
I
know
anyway,
are
not
related
to
this
main
algorithm.
They
they
relate
to.
D
D
And
here
you
go
okay,
so
I
wound
up
with
a
polar
error
of
1
degree,
20,
one
minute
20
seconds
and
a
small.
You
know
about
a
a
minute
in
altitude
and
a
little
less
than
a
minute
and
azimuth,
and
if
I
zoom
in
you'll
see
a
very
tiny
triangle
which
I
you
know.
As
I
pointed
out
earlier,
you
shouldn't
try
to
fix.
In
my
humble
opinion,
if
I
can
find
there's.
D
A
F
That
must
that
must
be
a
lot
of
fun
and
it's
a
remarkable
the
work
that
you've
done
right
now,
I'm
using
sharp
cap.
Looking
at
the
celestial
north
pole
in
the
back
of
my
house,
I
can't
see
the
north
pole,
and
so
I
wonder,
could
I
use
this.
I
am
running
windows
and
I
I
see
that
k-stars
will
run
on
windows.
F
D
D
Your
first
question
was,
you
know
like
you,
couldn't
you
don't
slew,
but
you
could
you
know?
If
you
use
this,
you
would
have
the
control
of
the
you
know.
You
would
be
able
to
automate
your
slews,
so
I
don't
see
why
you
know
this
is
free
software.
It
runs
on
windows,
my
stuff
isn't
released,
yet
I
don't,
I
think
there
are
the
pre-releases
are,
are
available
to
windows
as
well
as
linux.
D
You
know
to
testers,
but
honestly
you
know
people
who
are
new
to
the
software,
probably
shouldn't
be
using
these
pre-releases
right.
You
know
because
the
whole
point
of
these
pre-releases
are
that
they're
for
testing
and
you
know
experienced
person
would
know
if
you've
come
up
across
a
bug
or
if
you're,
just
not
using
the
software.
You
know
as
intended.
D
A
D
So
there
is
a
you
know,
I
haven't
used
it,
but
there
is
a.
I
don't
know.
If
you
looked
at
my
screen,
there
was
a
manual
slew
option,
but
yeah
there
is
a
check
box
there
that
says
manual
slew.
Honestly,
I've
got
no
clue.
I
didn't
test
that,
so
I
guess
I
should,
but
I,
if
that
works,
then
you
could
use
it.
F
D
C
C
D
In
theory
you
know
it
it.
As
I
said
it,
you
pick
three
points
and
it's
going
to
define
a
plane
from
those
three
points
and
the
norm
of
the
plane
is
the
center.
Is
that
axis
now?
If
you
pick
three
points
really
close
to
each
other
and
you
have
noise
in
your
measurement
and
yada
yada,
you
know
your.
Your
estimate
of
that
axis
is
reduced
right.
So
I
don't
know
that
I
would
do
one
degree
separation.
D
E
D
D
I
know
that
it's
fairly
consistent
among
measurements-
and
I
know
that
a
lot
of
imaging
after
aligning-
and
I
seem
to
do
fine
or
as
well
as
I
used
to
so
I
think
it
works.
But
honestly
I
don't
have
like
I
probably
should
use
a
phd
to
drift
a
line
and
compare
it.
I
I
I
have
user
that
has
done
that
in
in
the
thread.
You
know
that
I
opened
up.
You
know.
People
have
tried
this
and
compared
it
with
other
techniques
and
they
they
don't
have
complaints.
D
A
D
D
D
Do,
though,
is
move
the
the
routines
originally
implemented
were
in
float,
and
I
had
to
move
them
to
double
precision
to
get
this
thing
to
work,
believe
it
or
not,
because
the
the
anyway
that
that
computing,
that
that
plane
and
the
normal
to
that
plane
turned
out.
You
know
you
do.
The
the
cross
product
is
actually
a
quite
a
narrow
angle.
If
that
means.
A
A
So
what
does
that
mean?
Sometimes
these
are
called
semi
apo,
and
so
what
it
is.
It's
it's
a
four
element:
telescope
design,
it's
called
a
petzval
petzval
design
and
essentially
what
it
is.
It's
a
doublet
with
a
really
long
focal
length
which
reduces
the
chromatic
aberration
right,
so
the
the
colors
focus
more,
nearly
at
the
same
point
for
a
long
focal
length
doublet
than
a
shorter
focal
length
doublet
and
then
at
the
back
of
the
scope.
A
They
add
a
field
flattener
and
maybe
combination
focal
reducer.
And
so
then
you
have
a
reasonable
focal
length
scope
as
well
as
some
amount
of
chromatic
aberration
correction.
So
it's
not
fully
corrected
like
a
like
a
triplet
or
a
full
apo
would
be
with
the
different
types
of
glass,
but
the
theory
is,
is
that
in
in
our
case,
for
using
it
with
monochrome
cameras
and
filters,
it
shouldn't
really
matter.
A
So
that's
that's
what
I
wanted
to
test
and
of
course
we
do
know
that
there's
very
high
quality
scopes
that
use
this
design.
For
instance
the
the
takahashi
fsq-106
is
you
know
the
the
would
be
a
pride
and
joy
to
to
own
bruce
has
one-
and
I
think,
there's
others
that
that
have
them
as
well
in
the
club,
but
that
that's
a
really
nice
scope
of
the
of
the
same
type
of
design.
A
I
did
a
lot
of
research
on
on
cloudy
nights
and
and
people
mostly
visual
people.
They,
like
the
flat
field.
There
is
still
some
chromatic
aberration
when,
when
looking
at
it,
you
know
with
your
with
your
eye
or
with
the
color
camera,
and
so
for
that
reason
the
visual
observers
and
people
with
one
shot.
Color
cameras
are
actually
preferring
like
a
132
triplet
over
this
over
this
scope.
A
But
I'm
not
gonna.
You
know,
look
a
gift
horse
in
the
mouse
mouth
if
we
can
make
it
make
it
work
for
us.
So
this
thing
is,
is
a
big.
It's
a
big
scope
right,
so
you
can
see
it
up
against
my
my
12-inch
rc
there,
and
it
is,
you
know
like
sorry.
It
is
like
20
pounds
of
payload
by
the
time
you
get
the
camera
and
everything
on
there.
A
A
It's
a
little
hard
to
to
move
that
thing
around,
get
it
in
and
out
through
the
through
the
doors
of
the
of
the
car.
So
maybe
this
will
be
a
little
easier
to
get
out
to
little
yuvas
with
we'll
we'll
see
so
speaking,
of
which
here's
the
the
first
light
test-
and
this
was
you
know
about
three
hours
of
data:
no
flats,
no
darks,
no
bias
from
union
city.
So
you
know
bortle
ate
a
white
zone
and
I
the
focus
is
a
little
soft.
A
I
just
focused
one
time
quickly
and
sort
of
ran
back
in
the
house
and
but
you
know
the
field
is
is
flat
and
you
know
it's
it's
about
0.98
arc
seconds
per
pixel
and
that's
about
the
dos
limit
of
the
scope
as
well.
So
everything's
well
set
up
with
the
with
an
asi
1600
and
and
what
not
so
it
looks
it
looks
promising.
A
A
I
I
3d
printed
this
part
that
would
let
me
grab
on
to
the
fine
focus
knob
with
a
with
a
little
stepper
motor
and
that
I
had
previously
built
a
arduino
controller
for
and
so
that
there
seems
to
be
this.
This
vixen
focuser
with
the
dual
speed
there
seems
to
be
a
little
bit
of
slippage
between
the
fine
focuser
and
the
and
the
main
focusing
shaft
there.
It's
an
it's.
Actually,
a
an
add-on
part
to
have
the
dual
speed.
I
don't
know
how
it
works
internally,
but
it
was.
A
It
was
slipping
for
me.
So
you
know
I
turned
the
stepper
motor
and
could
see
the
shaft
turning,
but
then
the
focuser
wasn't
going
anywhere.
So
that's
not
going
to
work,
and
then
I
printed
a
different
shaft
coupler
to
use
the
the
main
focuser
knob
and
then
I
didn't
have
enough
torque
and
yes,
I
could
get
a
bigger
stepper
motor,
but
at
this
point
I'm
pretty
much
ready
to
to
give
up
and
and
go
ahead
and
put
one
of
my
moonlight
focusers
on
here
for
a
couple
reasons:
I'll
talk
about
in
a
minute.
A
One
challenge
with
that.
Is
this
thing
it
you
know,
there's
a
there's
a
flange
shown
on
the
right
there,
that
is
between
the
the
ota
and
the
focuser,
but
that
flange
also
has
the
the
rear
lin
cell
for
that.
Fourth,
those
last
two
lens
elements
threaded
into
it,
and
I
can't
I
haven't-
been
able
to
mechanically
break
the
the
focuser
loose
from
that
from
that
piece.
So
cloudy
nights
was
talking
about
blow
torches
and
stuff
which
it
may
take,
but
I
I'm
a
little
scared
to
to
do
that.
A
A
But
so
that's
where
we
are
on
the
on
the
focuser
and
yeah
I
did
check
with
with
moonlight
and
they
don't
have
something
that
replaces
that
that
flange,
although
featherlite,
does
for
their
focusers,
but
I've
already
got
moonlight
focusers
in
in
stock,
so
to
speak.
So
I'm
trying
to
standardize
on
those
so
we'll
see
if
we
can
break
that
break
that
thing
off
or
if,
if
I
can.
A
So
the
reason
for
the
the
moonlight
a
couple,
a
couple
reasons,
one
that
you
know
it's
much
lower
profile
than
the
stock
focuser.
So
that
gives
you
more
back
focus
allowance,
and
that
might
mean
that
you
know
we
could
apply
more
more
focal
reduction
on,
maybe
a
less
expensive
focal
reducer.
You
know
the
typical
focal
reducers
we
have
are
the
the
ccd
t67.
A
These
are.
These:
are
both
I'm
gonna?
Get
it
wrong?
Not
is
it
astrophysic
or
astrotech
or
some
one
of
those
and
then
the
the
27
tvph,
so
the
ccdt67s
are
are
less
expensive
and
but
they
have
a
lot
of
magnification
depending
on
your
your
sensor
to
focal
reducer
distance
and
you
run
into
problems
with
with
back
focus
with
onag
and
stuff.
So
I
might
try
putting
it
on
top
between
the
on
egg
and
the
imaging
camera
and
the
the
lower
profile
of
the
moonlight
will.
A
It
fits
down
the
barrel
of
a
2.5
inch
focuser.
It
takes
up
that
whole
space,
so
you
can't
have
a
you,
can't
use
it
with
a
two
inch
focuser.
Basically,
so
a
2.5
inch
moonlight
will
work
with
that
it'll
fit
right
down
inside
there.
So
that's
the
other
reason
to
go
to
the
moonlight,
so
that's
kind
of
where
we
are
so
I'll.
Keep
you
posted
and
hopefully,
with
the
end
of
covid
and
other
things.
You'll
we'll
have
this
out
at
a
little
little
yuvas
and
get
some
good
get
some
good
pictures
with
it.
A
A
F
F
F
F
Yes,
okay,
okay,
for
you
see,
I
have
a
star
adventurer.
Always
I've
used
this
nikon
d5600
with
ordinary
camera
lenses,
and
there
are
limits
to
what
an
inexpensive
nikon
zoom
telephoto
can
do,
and
so
I
thought
I
would
replace
that
telephoto
with
a
small
telescope.
This
is
a
william
optics
zenith
stars
61
mark
ii.
This
is
a
new
telescope,
new
version
of
the
telescope
introduced
last
summer.
F
F
F
F
F
F
F
B
A
A
I
don't
think
it's
solid
yet
so
I
may
be
jumping
the
gun
a
little
bit
here,
but,
but
I
know
bruce
is
in
discussions
with
alex
from
telescope
live
and
we
hope
to
have
him
next
month
and
it
probably
won't
be
actually
live
unless
we
well,
that's
a
good
that's.
This
is
a
good
time
to
bring
this
up.
So
how
would
would
people
be
okay
with
a
sunday
afternoon
versus
a
tuesday
evening
so
that
we
could
have
alex
from
italy
live
versus
it?
Being?
A
A
F
A
Yeah,
so
I
I'm
still
kind
of
adapting
to
the
the
their
their
monetization
model
or
whatever
their
rules
for
for
how
they're
gonna
run
their
their
telescopes
and
so
with
the
the
silver
level
of
membership.
They
pick
some
targets
and
they
call
them
one
click
targets
and
they
give
you.
Basically
they
give
you
a
half
an
hour
of
data
and
and
they're
saying
you
know,
since
it's
from
chile
or
spain
or
wherever
that
that
it's
good
good
enough.
A
Well,
it's
not
good
enough
and
for
me
in
my
opinion,
so
I
I
want
to
collect
multiples
of
those
and
so
we're
having
a
discussion
about
about
that.
But
you
know:
do
they
offer
the
targets
often
enough
on
a
repeat
basis
to
where
you
could
collect
three
of
those
in
a
month
or
a
couple
months
or
something
so
that
you
would
have?
A
Maybe
the
math
is
simple.
Math
is
escaping
me
at
this
point,
but
but
you
know
enough
subs
to
to
have
more
than
just
maybe
three
you
know
you
could
you
could
end
up
with
with
less
than
three
subs
for
a
single
one
of
their
one-click
observations
for
each
filter,
which
you
know
the
weighted
batch
pre-processing
script
in
and
picks
insight.
Won't
even
do
that
so
with
just
two
subs.
A
C
A
You
just
say
I
want
this
data
and
they'll
say:
okay,
we'll
have
it
for
you
three
weeks
from
tuesday.
Maybe
you
know
weather,
so
you
don't
get
to
schedule
a
slot
and
then
go
and
watch
it
happen
and
that
you
just
have
to
wait
for
it
to
to
run
and
then
they
they,
let
you
download
it.
So
that's
there
and
that's
you
know
by
the
minute
costs
over
and
above
what
you
pay
for
your
monthly
membership.
A
What
they're
giving
you
for
the
monthly
membership
are
two
different,
so
here
I'm
giving
the
guy's
presentation
for
him,
but
they
have
these.
They
have
these
one-click
observations.
So
at
the
silver
level,
you
could
have
five
active
one-click
observations
at
any
one
time,
so
they
may
offer,
let's
say
15-20
targets,
some
of
which
may
be
repeats,
which
I,
which
I
spoke
about
right
of
the
same
target
from
the
same
scope.
Same
filters,
so
you
can
have
you
know
out
of
that
20.
A
You
can
have
five
that
you're
waiting
for
at
any
given
time
and
then
that
each
of
those
is
a
half
hour
of
data
in
total
across
all
the
filters,
and
then
they
also
do
what
they
call
pro
data
sets,
which
is
a
little
less
defined
as
to
what
the
length
of
the
actual
data
would
be.
But
it's
supposed
to
be
enough
data
to
do
a
professional
quality
image,
so
they
post,
maybe
two
or
three
of
those
a
month.
But
again
it's
so
they're
picking
the
targets
you
know.
So
it's
like
rosette.
A
A
More
accessible
and
then
they
have
tutorials
and
and
the
tutorials
are
seem
like
they're
focused
on
you
know,
getting
started
type
of
things
so
they're
not
mostly
not
about
pix
insight,
they're,
mostly
about
photoshop
and
and
things
like
that
and
with
smaller
numbers
of
subs,
although
they
do
have
on
on
mentally
blocking
here
on
the
noel.
Is
it
noel
or
adam
adam
block?
A
A
Have
like
a
a
15-part
atom
block
on
on
a
big
galaxy.
I
forget
which
galaxy
it
was,
but
a
big
galaxy
taken
with
a
chi-1
which
is
a
alt-az
fork-mounted
scope.
So
he
goes
through
all
of
the
the
how
you
fix
all
the
problems
with
de-rotating
images,
even
though
that
scope
has
a
d-rotator
on
it
and
all
that
stuff.
A
So
it's
very
detailed-
and
I
think
it's
probably
I
don't
know
more
than
two
easily
more
than
two
hours
of
of
tutorials
from
him
that
were
included
for
no
charge
if
at
the
whatever
level,
the
silver
level
that
I
I'm
at
so
so
yeah.
So
anyway,
we'll
get
the
the
the
marketing
version
of
what
I
just
told
you,
hopefully
next
next
time,
and
so
that
should
be
good.
Definitely
they've
got
some
good,
some
good
gear
at
some
nice
location,
so
alrighty
it
is
nine
o'clock.