Etcetera
Assorted throwaway pancakes
Arcturus (26 Mar 2022)
Just a quick test image, but it is calibrated with flats and it might be interesting to see the same starfield through a Bahtinov mask (the black dots are due to the BPM, ignore them).
| Telescope | Skywatcher Esprit 100ED (f/5.5) |
| Filter | Astrodon LRGB Gen2 E-Series |
| Field flattener | Skywatcher Esprit (1x) |
| Camera | QHYCCD 268m, -20°C, Mode 0, Gain 26, Offset 30 |
| Resolution | 3112x2071 (cropped & scaled 50%) |
| Light frames | R: 1 (60s) |
| G: 1 (60s) | |
| B: 1 (60s) | |
| 3m total | |
| Flat frames | 16 each |
| Darkflat frames | 16 |
| Dark frames | - |
| Bias frames | - |
| Location | Bolton, UK |
| Local time | 2022-03-26 01:21 - 01:33 |
Rosette Nebula (20 Mar 2022)
First attempt of the Rosette Nebula (NGC 2237). Apparently astrophotograpy and fog can never be friends. Also, the Ha flats are overcorrecting so an quick articial flat was also used for that layer. (see the dust mote on the right).
Same data denoised and dustmote removed (by using the flats properly):
| Telescope | Skywatcher Esprit 100ED (f/5.5) |
| Filter | Atik Narroband 7nm Ha/SII/OIII |
| Field flattener | Skywatcher Esprit (1x) |
| Camera | QHYCCD 268m, -20°C, Mode 1, Gain 56, Offset 30 |
| Resolution | 3071x2027 (cropped & scaled 50%) |
| Light frames | H: 4/12 (300s), 20m total |
| S: 8/8 (300s), 40m total | |
| O: 8/8 (300s), 40m total | |
| 1h40m total | |
| Flat frames | 8/8/8 (3/60/10s) |
| Darkflat frames | 8 each |
| Dark frames | 10 |
| Bias frames | - |
| Location | Bolton, UK |
| Local time | 2022-03-20 20:15 - 22:17 (light frames used) |
Deneb (15 Oct 2021)
| Telescope | Skywatcher Esprit 100ED (f/5.5) |
| Filter | IDAS D2 (multi-bandpass light pollution filter) |
| Field flattener | Skywatcher Esprit (1x) |
| Camera | Canon 7D Mark II |
| Resolution | 5482x3679 |
| Light frames | 2, 180s @ ISO 1600, 6m total |
| Bias frames | - (reused from Soul Nebula 2022-01-05) |
| Flat frames | - (artificial flat) |
| Location | Bolton, UK |
| Local time | 2021-10-05 21:20 - 21:31 |
Sadr (15 Oct 2021)
We also have a processed image about the Sadr region.
| Telescope | Skywatcher Esprit 100ED (f/5.5) |
| Filter | IDAS D2 (multi-bandpass light pollution filter) |
| Field flattener | Skywatcher Esprit (1x) |
| Camera | Canon 7D Mark II |
| Resolution | 2698 x 1801 (scaled & cropped) |
| Light frames | 10, 180s @ ISO 1600, 30m total |
| Bias frames | - (reused from Soul Nebula 2022-01-05) |
| Flat frames | - (artificial flat) |
| Location | Bolton, UK |
| Local time | 2021-10-05 21:38 - 22:10 |
Mizar & Alcor (13 Apr 2020)
| Camera | Canon 400D |
| Telescope | Skywatcher 200/1000 Newton |
| Corrector | Vixen R200SS |
| Resolution | 1852 x 1235 (cropped & scaled) |
| Light frames | 10, 180s @ ISO 400 |
| 10, 360s @ ISO 400 | |
| 1, 1200s @ ISO 400 | |
| 1:50h total exposure | |
| Dark frames | 6, 180s (only) |
| Bias frames | - (reused) |
| Flat frames | - (artificial) |
| Location | Bolton, UK |
| Local time | 2020-04-13 21:52:20 - 23:43:12 |