NGC 7023 with STL-4020M camera                  Click on photo to return to 'Diffuse Nebulae'                          Home
 
Click for NGC 7023 full resolution

Object name: NGC 7023

Magnitude: 30.0
Equatorial: RA: 21h 01m 42s   Dec: +68°13'00"(current)
Horizon: Azim: 331°14'19"   Alt: +45°18'03"
Size: 10.0 x 10.0
Transit time: 10:19  Always above horizon.
Object type: Open Cluster
Constellation: CEP
Dreyer description : 7th magnitude star in extremely faint, extremely large, nebulosity.


Photo Specifications:

     TELESCOPE:  8" Newtonian F/5  no corrector
            CAMERA:  'SBIG'  STL-4020M & Baader Filters
CAMERA TEMP:  Temp. = -21 C
                   DATE: 08/23/09-08/27/09

Filter
Total
Exposure  time
Sub-frame
 Exposure time
Number  of Sub-frames
Binning
Luminance
2.5 Hrs
1800 & 900 sec
9
1x1
Red
2.25 Hrs
1800 & 900 sec
7
2x2
Green
2.25 Hrs
1800 & 900 sec
7
2x2
Blue
2.25 Hrs
1800 & 900 sec
7
2x2
Other










Processing:   Aquire data  CCDSoft, calibrate Maxim,  color combine; CCDstack align;  Photoshop CS2