NGC 7662. 'The Blue Snowball'
NGC 7662 was one of the very first objects I imaged, and I've had a soft spot for it ever since.
It's a planetary nebula, and can be found in Andromeda. No-one really knows the distance, estimates vary from between 1800 and 5600 light years, making it between 0.3 and 0.8 light years across.
The dwarf star in the centre varies in magnitude between 12 and 16, and
has a surface temperature of around 75,000K. It was a tricky one...tricky
to image and tricky to process!
A widefield of NGC 7662 and the surrounding starfield imaged on the 3rd
and 4th of the October 2008.
Not my earliest, but an older version imaged with a DSI Pro 2 on 10th October 2007.
My first image of the Blue Snowball, imaged on the 20th Novenber 2006.
Click on image below for full size version
This is my highest resolution image so far of this target.
Telescope. 14 inch LX200GPS @ F10.
Exposures were 1 minute and 2 minutes for the LRGB data, and 4 minutes
for the SII,Ha and OIII. These were combined with the RGB using the Hubble
pallete of SII for Red, Ha for Green, and OIII for blue.
L X 10, R X 4, G X 5, B X 4. All 1 minute unbinned.
Scope, WO ZS80FD @ F6.9.
Telescope. Meade LX200GPS 14" @ F10
L- 1 Minute x 16
Telescope. 10" Meade LX200 classic, alt az mount.
Camera. Meade DSI pro1.