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 a quick articial flat was used for that layer instead
(see the dust mote on the right).

|
|
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 (-/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 |