| Date: |
September 29, 2003 |
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| Exposure: |
Ha (3nm) 20400 : 17 x 1200s |
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| Processing: |
Captured with CCDSoftV5, MaxIm for Image calibration,(16 flats dark subtracted and Sigma Reject combined, 40 bias frames Sigma Reject combined, 20-1200s darks Sigma Reject combined), dead/hot pixel removal, alignment, normalization. Photoshop with OZONE plugin for final processing and jpg conversion. |
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| Conditions: |
Clear, Mag 3-4 Skies |
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| Scope: |
AP155EDF, f/7 (1.671 arcsec/pix measured with TheSky), Vixen 102mm Flourite @ f/9 for Guiding. All equipment on a Paramount ME and can be seen here. |
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| Camera: |
SBIG ST-8XE, -20°, SBIG ST-237A for Guiding |
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| Comments: |
Started this one after it crossed the meridian and imaged for two nights to get the 5 2/3 hours. For me, this is the most interesting area. NGC6820 is a bright (emission and/or reflection) nebula in Vulpecula. I used John Smith's Sequencer software to control the imaging, park the scope and turn off the camera cooler. I went to bed after I started the program and everything was finished when I got up. This is a great program and John has done a marvelous job making it feature rich and time saving. I would highly recommend it. |
