NGC 7635 Bubble Nebula , sh2 157 , NGC 7538 and M52
Bi-Color Technique
|
Hydrogen Alpha Channel |
Oxygen III Channel |
|
Crop of Tif version |
Crop of original Hydrogen |
Telescope : Takahashi FSQ 106 ED @ F5
Camera : Starlight Xpress SXVR H35 Full frame
Filters : Baader H@ 7 nm and OIII
Mount : I Optron IEQ45
Guiding : 70 mm Vixen guidingscope and Meade DSI 1 using PHD
Exposure : 5 x 20 min Hydrogen , 6 x 20 min Oxygen III , BPM and 50 bias frames (flats failed due to dust on filter)
Processing : Nebulosity , CCD Stack and PS CS 4
DDP , Levels , curves ,Noise ninja ,Gradient Xterminator
Location : Sterrenwacht wave
The Haque , The Netherlands
Date : 20-8-2011
Remarks : Second light Takahashi FSQ 106 ED , I chose this object to see if the Takahashi will bring the promised sharpness when cropping on the Bubble Nebula.
Due to guidescope problems I had guiding errors in the 3th till 6th exposures , only image 1 was spot on.
Bad luck !
