240s exposures in each of RGB this time instead of my usual 180s. Strong moonlight though but APP dealt with the gradients pretty well. Much deeper into the fainter stars.
| Object ID | M13 Globular, Hercules NGC 6341 |
| Details | Mag 6.3 Size 14′ |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 5x240s ea RGB draks, flats, bias |
| Capture | APT |
| Processing | APP, Photoshop |
Decided to try 240s exposures in each of RGB this time instead of my usual 180s (chosen to balance detail and LP) and it seems to have worked well, especially since there only 5 subs of each colour. Much deeper into the fainter stars too.
| Object ID | M13 Great Globular, Hercules NGC 6205 |
| Details | Mag 5.8 Size 16.6′ |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 5x240s ea RGB draks, flats, bias |
| Capture | APT |
| Processing | APP, Photoshop |
A new globular for me and constellation Serpens
| Object ID | M5, NGC5904 |
| Details | Globular Cluster, Serpens Mag. 5.95 Size 23′ 2020-04-15 23:54 UT -> Seeing very good |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 10x180s each RGB darks, flats, bias |
| Capture | APT |
| Processing | APP, Photoshop |
Because sky conditions were very poor I went back to globulars as nebulosity can easily disappear in LP and fog. APP got rid of the massive gradients and LP quite well I think.
| Object ID | M92 (NGC6341) |
| Details | Size 14′, Mag. 6.3 Hercules |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX -15C |
| Exposure(s) | 10x180s ea RGB 1×1 darks, flats, bias |
| Capture | APT |
| Processing | APP, Photoshop |
Just a few exposures between gaps in the clouds. L not used because of dust on the filter.
| Object ID | M3 (NGC 5272) |
| Details | Canes Venatici Mag. 6.2, Size 18′ |
| Telescope | 203mm RC8 at f8 |
| Camera | Atik 460Ex @-20C Badder RGB filters IDAS P2 LP filter |
| Exposure(s) | R,G 2x120s, B1x120s, 2×2 |
| Capture | APT, PHD2 |
| Processing | Nebulosity 4, Photoshop |
First proper imaging session of the season. New mount (EQ6-R) is guiding well with an RMS error of about 0.6″, Coma corrector is working well too. Stars are sharp right to the edges.
| Object ID | M15 (NGC 7078) |
| Details | 2018-09-08 Not very transparent and the remnants of twilight too. |
| Telescope | 200mm f5 Newtonian, MPCC IDAS P2 LPR filter Guiding c80ED, ASI 290MC |
| Camera | Canon 600D |
| Exposure(s) | 10x60s, darks and flats |
| Capture | APT, PHD |
| Processing | Nebulosity, Photoshop |
Globular Cluster, Hercules
Mag 6.4 Size 14′
2010-09-09
200mm f5 Newtonian, Canon 350D
Guided, SW LPR filter, MPCC
10x60s, 10x180s subs, darks
Processed in Nebulosity and PhotoShop CS5
Globular Cluster, Aquarius
Mag 6.5 Size 16.0′
2008-09-29
10″ f5.1 Newtonian Canon EOS 350D Unguided
15x20s, 5x30s subs ISO 800
Nebulosity, PhotoShop CS3 and Noel’s Actions
Lots of light pollution and tracking not great.
Globular Cluster, Canes Venatici
Mag 6.2 Size 18′
2011-04-28
200mm f5 Newtonian MPCC Guided
Canon EOS 350D, Astronomik CLS
15x120s 10x180s darks ISO 800
Captured in APT
Processed in Nebulosity and PS CS5
Globular Cluster, Sagitta
Mag 8.2 Size 7.2′
2010-08-15
200mm f5 Newtonian, Canon 350D
Guided, SW LPR filter, MPCC
3x120s subs before clouds
Processed in Nebulosity and PhotoShop CS5
First use of new Skywatcher LPR filter.
Doesn’t really look like a globular – in fact it wasn’t classified as one for a while.
