Horsehead Comet 8P/Tuttle & M33 Horsehead

(Click on image for 50% Resolution)

(Click here for an animation of the 6 frames to see the tail)

Date: December 30, 2007
Exposure: L 12m : 6 x 120s
Processing: CCDSoft for image acquisition, controlled by CCDAutoPilot3. Processed in CCDStack. Composite created in CCDStack from 6 luminance frames. Animation created in Photoshop CS2 and converted to GIF for web presentation.
Conditions: Clear, but fog and occassional clouds
Scope: FSQ-106N
Camera: SBIG STL 11000XM, -25°
Comments: The comet had already passed M33 when it cleared at the SRO site. I set up CCDAutoPilot3 to start taking 5 min images, but the first image that came out showed a very elongated core of the comet. This one is moving very fast. I dropped the exposure time to 2 min. and ran a sequence of RGBC and repeated that 24 times. There wasn't enough color data collected due to the clouds and fog to try and make a color image, so I used the best luminance that came out. The 6 frames that were used show a movement of about 55 min total time.