Originally posted by Transit thanks for the info
as far as the sky colour, not sure, will try to get a sample if the cloud clears
you can see the open shade tint on the white shirt collars,
someone who is walking in the street, under the blue sky
in the shade of his head, of his hair, of his neutral hat !
1st night = clear sky but Huge turbulence + the Full Moon near :
... once more, I had to discard ~50% of my shots
+ last WE, steady, but hazy sky !
M-106 Galaxy : ~25 Million Light-Years from Q10 - apparent core size 2.5'x 6'
Magnitude minus Air- and Dust- and Light-Pollution worse than
10 !?
M-106 Galaxy : Q10 + SkyGlow Filter + Skywatcher 200/1000 =
88 x 30 seconds - ISO 1600 :
stacking : DeepSkyStacker 3.3 - finish : Elements 3.0
Shot at sea level in a big city = lots of light-pollution & turbulence !
... and what about accuracy ? ^ ^
I highlighted 2 Stars close to the Galaxy :
- the white one named USNOA2-1350-08095435 : Magnitude 17.3
- the blue one named USNOA2-1350-08095450 : Magnitude 17.1
the distance in between is about ~8.5 arc second
to " Live-View "
M106, it's here :
SKY-MAP.ORG
this view is -90° counterclockwise from my photo
... the 2 Stars are at the end below
M106...
use the scale at left to zoom in / out
~8.5 arc second = ~26 pixels on my original picture...
... so the accuracy is Better than 1 arc second
One arc second = 1/1 296 000 of a circle
in other words 1/3 600 of 1 degree
1 degree is ~ half your thumb's nail width, your arm held out to the sky...
you have to draw
7 200 parallel fine lines on your thumb's nail !
... looking from your arm's full length... good luck !
not so bad in the particularly poor conditions I shoot Astro Photos ?
... with very amateurish tools : Skywatcher Black HEQ5 + Blue 200/1000 T30P.
heat up your Pentax Q !
.