NGC7635 - The Bubble Nebula

July 25 2014

Object: NGC 7635
Date: August 20, 2001
Exposure(s): 2x60 Min (2 Hours)
Film: Kodak Ektachrome E200
Equipment: 10" f/10 Meade OTA w/Lumicon GEG at f/7.5, Losmandy G-11, Minolta SRT-102 35mm camera body.
Guiding: ST-4 (A1  @ 1130mm).

Hardware & Software: HP S20xi film scanner, Hamrick Software's VueScan (7.5.44), The images were processed with curves using Picture Window Pro 3.1 smoothed lightly using SBGNR and then stacked useing a script with Registar 1.0.

Info: This image was good in terms of exposure and tracking, but the focus was very poor. I hope I get a chance to redo this with better focus.

Object: NGC7635
Date: September 3, 2002
Exposure(s): 7x18 Min
Film: Konica Centuria Super 1600
Equipement: 10" f/10 Meade OTA w/Lumicon GEG at f/7.5, Losmandy G-11, Minolta SRT-102 35mm camera body.
Guideing: ST-4 (A1 - A3's).

Hardware & Software: HP S20xi film scanner, Hamrick Software's VueScan (7.1.11), The images were processed with curves and a gamma adjust, cropped, and then digitally stacked using Picture Window.

Info: NGC7635, also called the `Bubble Nebula'. This image was just an experiment of the new Konica Centuria Super 1600 film. Its not the best for this application (heavy light pollution). It may have some better modes of use... Focus and guiding was very good across the FOV for my old SCT.

Object(s): NGC 7635 (The Bubble Nebula) & M52
Location: Great Lakes Star Gaze 7 (Gladwin, MI)
Date: September 2009
Mount: Losmandy G-11
Scope: Vixen VC200L with Focal Reducer
Exposure: 8x10 Min Modified Canon Rebal XT (350D) @ 800 ISO (25 Darks, 55 Flats)
Guiding: SBIG ST-4 thru ETX90 OTA
Processing: DSS & PWP

The Story: My framing was pretty bad (one would think I could have either centered the bubble or could have not cut M52 in half) and I only collected 8 frames before my autoguider could no longer see through the dew on the guidescope. (The dew on Friday Night/Saturday Morning was so bad, that both the secondary and primary were covered with dew - and it was literally dripping off the scope!) After struggling with the dew for more an hour my battery died and I only had power for the scope's drive. I spent the rest of the night doing visual. Still, Imaging from a "dark" site is like shooting fish in a barrel!  Compared to what I get "under the light dome", even the subs looked great!

NGC 7635 - The Bubble Nebula (Thumbnail)