Cigar Galaxy

Captured and Processed by MD Shahadat Hossain Shahal

Astrophotography information

Astrophotography MD Shahadat Hossain Shahal
Observing location Bandarban , Lama (21.739769,92.168984)
Exposure time 120 min.
Telescope Unistellar eQuinox 1 (Ashvin 1), 114 / 450 mm
Camera Sony IMX224, 1.27 Mpx
Field of view (resolution) 37′ × 28′ in arcmin (1.7 arcsec)
Image processing MD Shahadat Hossain Shahal
Image processing method 1. Stack all calibrated frames in DeepSkyStacker (DSS).
2. Attempt plate solving inside Siril.
3. Blind Plate Solving (If Siril fails to find an astrometric solution)
4. Perform Background Extraction in Siril to remove gradients and light pollution.
5.Apply Spectrophotometric Color Calibration (SPCC) for accurate colors.
6.Remove stars from the image (using star removal tool).
7.Stretch the starless image to bring out faint details.
8.Apply noise reduction
9.Add the stars back into the processed image.
10. Apply mild sharpening to make stars cleaner and more defined.
11.Minor adjustments if needed

Astrophysical information

Object type Starburst galaxy
Constellation Ursa Major
Distance 12 Mly
Angular size  11.2 × 4.3 arcmin
Physical size 37 Kly
Apparent magnitude 8.41