Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Blue Snowball  ·  NGC 7662
NGC7662 - Blue Snowball Nebula, 



    
        

            Bob
NGC7662 - Blue Snowball Nebula
Powered byPixInsight

NGC7662 - Blue Snowball Nebula

NGC7662 - Blue Snowball Nebula, 



    
        

            Bob
NGC7662 - Blue Snowball Nebula
Powered byPixInsight

NGC7662 - Blue Snowball Nebula

Equipment

Imaging Telescopes Or Lenses
11" EdgeHD
Imaging Cameras
QSI 683wsg-8
Mounts
CGE Pro
Filters
Astronomik LRGB
Accessories
Moonlight CHL Focuser
Software
PixInsight 1.8 · Photoshop CC · MaximDL 6 · PHD2
Guiding Telescopes Or Lenses
Celestron OAG
Guiding Cameras
Loadstar X2

Acquisition details

Dates:
Sept. 18, 2016
Frames:
Astronomik Blue: 8x300" (40') -20°C bin 1x1
Astronomik Green: 8x300" (40') -20°C bin 1x1
Astronomik Luminance: 120x30" (1h) -20°C bin 1x1
Astronomik Red: 8x300" (40') -20°C bin 1x1
Integration:
3h
Darks:
30
Flats:
30
Bias:
100
Avg. Moon age:
16.70 days
Avg. Moon phase:
95.81%
Bortle Dark-Sky Scale:
7.00
Temperature:
28.00

Basic astrometry details

Astrometry.net job: 1246344

RA center: 23h25m54s.5

DEC center: +42°3158

Pixel scale: 0.400 arcsec/pixel

Orientation: 91.292 degrees

Field radius: 0.232 degrees

Resolution: 3326x2504

Locations: Backyard, Space Coast, Florida, United States

Description

This was one of the first objects my son and I observed when we got our CGEM / 8" scope a few years ago, and I have always wanted to try to image it. It is a difficult nebula to get detail on because it is so small (37"), and a full moon doesn't help. Also, the ring in the middle is bright, which requires short exposures. This was shot at 2800 mm because of size and I did 300 x 30 second luminous frames, but used less than half of them. This was combined with 40 minutes each of R, G and B. All binned 1x1. The inset is an enlargement of the nebula at the center of the image. The second inset, to the right, is a Hubble image of the same object. To get as much detail as possible, I performed a combination of up-sampling and deconvolution in PixInsight. Other than the full moon, the sky was good and calm. Guiding ran between 0.35" and 0.45" RMS the whole night.

Comments

Sky plot

Sky plot

Histogram

NGC7662 - Blue Snowball Nebula, 



    
        

            Bob