Abell 426 - 8.25 hours integration time.
Posted: 02 Dec 2024, 16:47
Images centred on NGC1275. Spiral dithering.
10in F8 SCT with an ASI 1071MC camera, CEM120 mount, ASI OAG and 178MM guide camera. JMI Crayford with DC motor and FCUSB ASCOM focus controller.
99 x 5min exposures (Sigma stacked 3rd order correction), 5 Dark Frames and 5 flat fields. Full frame autoguided and autofocused (every 10min) via AA9 64bit.
Seeing averaged about 2 arc seconds during the imaging run while temperature fell about 10C, it was windy at the start of evening with ~20km/hr gusts but it fell to 1/2 that over the course of the evening, increasing towards dawn. My RoR observatory has 2 metre high walls and gives good protection from winds under 30km/hr. My observatory is located at w109.1, n31.9.
Processing history:
07:06:31 Flip horizontal
07:05:47 Rotate -90
06:58:28 Crop 57 0 4943 3280
06:51:46 DDP 90 35 5 50 0 0.82 20
06:48:53 Deconvolution (15 iterations RL default settings)
I had to use a lot of jpeg compression to meet the file size limit.
10in F8 SCT with an ASI 1071MC camera, CEM120 mount, ASI OAG and 178MM guide camera. JMI Crayford with DC motor and FCUSB ASCOM focus controller.
99 x 5min exposures (Sigma stacked 3rd order correction), 5 Dark Frames and 5 flat fields. Full frame autoguided and autofocused (every 10min) via AA9 64bit.
Seeing averaged about 2 arc seconds during the imaging run while temperature fell about 10C, it was windy at the start of evening with ~20km/hr gusts but it fell to 1/2 that over the course of the evening, increasing towards dawn. My RoR observatory has 2 metre high walls and gives good protection from winds under 30km/hr. My observatory is located at w109.1, n31.9.
Processing history:
07:06:31 Flip horizontal
07:05:47 Rotate -90
06:58:28 Crop 57 0 4943 3280
06:51:46 DDP 90 35 5 50 0 0.82 20
06:48:53 Deconvolution (15 iterations RL default settings)
I had to use a lot of jpeg compression to meet the file size limit.
