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.
Globular Cluster, Hercules
Mag 5.8 Size 16.6′
2011-04-29
200mm f5 Newtonian MPCC Guided
Canon EOS 350D, Astronomik CLS
15x120s 10x180s darks ISO 800
Processed in Nebulosity and PS CS5
An updated version with the 200mm.
Globular Cluster, Coma Berenices
Mag 7.6, Size 13′
2010-04-18
200m f5 Newtonian, Canon 350D, DS filter, Guided
10x60s subs, ISO 800
Processed in Nebulosity and PS CS3
2014-03-23
200mm f8 RC, piggyback guiding C80ED
20×180 5×240 ISO 1600, darks duff so used old ones
Canon EOS 350D modded, Astronomik CLS
Captured in APT, Processed in Nebulosity, PS CS5
Globular Cluster, Lyra
Mag 8.3 Size 8.8′
8-09-2008
10″ f5.1 Newtonian, Canon EOS 350D
Subs: 8x30s, ISO 800
Processed in Nebulosity and PS CS3
Not the most spectacular globular. Probably need a better image scale and longer subs.
