Astrophotography · Galaxies
Messier 106
Captured by MD Shahadat Hossain Shahal, Processed by Iman Sheikh
The object · NGC 4258
A detailed essay on Messier 106 is coming soon.
বাংলায়
এই জ্যোতিষ্কের বিস্তারিত বাংলা বিবরণ শীঘ্রই যুক্ত হবে।
- Photographer
- MD Shahadat Hossain Shahal
- Observing location
- USA, Nevada (37.978845,-114.856567)
- Exposure
- 120 min.
- Telescope
- Takahashi Epsilon 250 (iTelescope - T05), 250/ 850 mm
- Camera
- SBIG ST-10XME
- Field of view
- 59.8 x 40.3 arcmin(1.64 arcsec)
- Image processing
- Iman Sheikh
- Processing method
- Step 1 Preprocessing/Stacking With Siril - Used (erikwestermann-lrgb-preproc.ssf) Script for staking. Step 2 Linear Processing With Graxpert - Cropping - Background Extraction - Deconvolution - Denoising Step 3 Linear Processing and Stretching With Siril - Astrometry - Image plate solver - Spectrophotometric Color Calibration - Starnet - Separated stars from galaxy - Stretching - Generalized Hyperbolic Stretch Step 4 Non-Linear Processing in GIMP - Saturation and color adjustments - Unsharp mask for detail - Curves - Fine control of brightness and contrast
Astrophotographic information
- Object type
- Spiral galaxy
- Constellation
- Canes Venatici
- Distance
- 23.7 Mly
- Angular size
- 18.6 × 7.2 arcmin
- Physical size
- 135 Kly
- Apparent magnitude
- 8.4
Astrophysical information