Object Data: Recorded in the early hours of 21 December 2001, this animated image shows an interesting sequence as Asteroid Priscilla (2137) appears to be on a collision course with M104!
Sequence Date: 2001-12-21
Exposures: All 10 minutes in length. All times GMT
Exposure 1: 04:29:19
Exposure 2: 04:40:31
Exposure 3: 04:51:39
Exposure 4: 05:02:46
Exposure 5: 05:13:55
Exposure 6: 05:25:00
Exposure 7: 05:36:06
Exposure 8: 05:47:11
Location: Southern France
Conditions: calm, transparency=9, seeing=7
Optics: RCOS Ritchey-Chretien 12.5" f/9 working at f/6.75 with AP focal reducer
Mount: AP 900 GTO on Portable Pier
Camera: SBIG ST-8E / CFW-8
Guiding: ST-8E integral guiding chip controlled by MaximCCD
Exposure: Luminance only: 8x 10 minutes
Processing: Image acquisition and calibration with MaximCCD/DL. No other processing.
Notes: There were definitely 8 exposures but only 7 were captured in this sequence - I'll have to see if I can find the missing exposure!