A cosmic sad face - The Leo Triplet

[R1k]

Hi guys, happy with this overall, but would like constructive feedback as always. In particular, I've noticed a real difficulty with achieving nice star colour, I've managed to tease out some colour in the orange stars but really struggled to achieve any colour in the hot blue ones, even after star colour calibration in APP or photometric colour calibration in Siril. I suspect this is because my subexposure duration is so long (to overcome lack of dynamic range of shooting with a DSLR), but nonethless if anyone has any tips or tricks for this they would be greatly appreciated, thanks again. 

 

Equipment:
- Skywatcher HEQ5-pro (Rowan Belt Mod)
- Canon 800d (modded)
- Explore Scientific ED APO 102mm F7 FCD-100 Triplet Carbon Fibre
- Hotech SCA 1x field flattener
- ZWO ASI-120MM-mini guide camera
- Skywatcher Evoguide 50ED guidescope
- 2 inch mounted Optolong L-Pro

Acquisition:
- Sharpcap polar alignment, ASCOM guiding/dithering with PHD2
- APT image acquisition
- Lights - 67 x 300s ISO200 (5 hours 35 minutes)
- Darks – 25 + 25
- Bias - 30 + 30
- Flats - 30 + 30

 

Edited April 8, 2021 by R1k

[callisto]

Nice image 👍

 

Mark

[Sunshine]

Beautiful!

[Marki]

That's stunning.!