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



    
        

            Bob
NGC7662 - Blue Snowball Nebula
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NGC7662 - Blue Snowball Nebula

NGC7662 - Blue Snowball Nebula, 



    
        

            Bob
NGC7662 - Blue Snowball Nebula
Powered byPixInsight

NGC7662 - Blue Snowball Nebula

Technical card

Imaging telescopes or lenses: 11" EdgeHD

Imaging cameras: QSI 683wsg-8

Mounts: CGE Pro

Guiding telescopes or lenses: Celestron OAG

Guiding cameras: Loadstar X2

Software: PixInsight 1.8  ·  Photoshop CC  ·  MaximDL 6  ·  PHD2

Filters: Astronomik LRGB

Accessory: Moonlight CHL Focuser


Dates:Sept. 18, 2016

Frames:
Astronomik Blue: 8x300" (40') -20C bin 1x1
Astronomik Green: 8x300" (40') -20C bin 1x1
Astronomik Luminance: 120x30" (1h) -20C bin 1x1
Astronomik Red: 8x300" (40') -20C 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

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