• took 60s and 90s exp in all filters
• moved to (RA/DEC: 05 37 31/34 07 50) and repeated.
• took dark and bias frames before finishing observation at 9:30pm.

• Began cooling at 16:45 to -12 deg C (~90%)
• Filter wheel set to Clear, Red, Green, Blue
• Centred on Capella and took GPS-fix. Encountered problem: telescope believed it was -1h RA from Capella however this offset was constant.
• Edit: This seemed to just be an issue with the coordinates read-out on the paddle.
• Centred on M35 and took 1000x0.1s exposures to focus.
• Then took 60s exposure- significant effects of moonlight on image- change target to M36 (RA/DEC: 05 37 13.8/34 09 04)
• Light pollution significantly reduced suggesting moon was indeed the source.

Log Book Entry No.176

Created: 15 Feb 2019 17:21:20

Last Revised: 15 Feb 2019 21:21:05

JacobChambers

PH4100 Photometry observation 2

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• Present JC, AD
• Began cooling at 16:45 to -16 deg C (~90%)