Exposure Data

• Instrument: 4.9" f/3.8 Wright-Newtonian
• F/stop: 3.8
• Exposure: 3 x 10 + 1 x 2 minutes
• Camera: Modified Nikon D70 Digital SLR
• Sensitivity: ISO 1600
• Exposure start: 22:50 MEZ
• Date: December 10, 2004
• Location: Ebenwaldhöhe, Lower Austria
• Conditions: Visual limiting magnitude 5.9 mag, seeing 3-4, temperature 0.5°C, no wind, low humidity
• Autoguider: Meade Pictor 216 XT, max. error: 2
• Enhancement: Adobe Photoshop CS 8.0, SGBNR 1.0.4
• Notes: The 2-minute exposure was used to substitute the saturated comet's core of the long shot. Autoguiding on the comet's core worked well. Field size 1°40' x 1°40'; north is up, east to the left.