Astrophotography · Nebulae
Horsehead Nebula
The object · NGC 2023
A detailed essay on Horsehead Nebula is coming soon.
বাংলায়
এই জ্যোতিষ্কের বিস্তারিত বাংলা বিবরণ শীঘ্রই যুক্ত হবে।
- Photographer
- Md Shahadat Hossain Shahal
- Observing location
- USA, Utah (39.422519, -111.714358)
- Exposure
- 16 min (8 × 120 s)
- Telescope
- Celestron RASA 11" (iTelescope — T68), 279 / 620 mm
- Camera
- ZWO ASI071 MC
- Field of view
- 2.22° × 1.46° (≈ 1.6″/pixel)
- Image processing
- Md Shahadat Hossain Shahal
Astrophotographic information · Md Shahadat Hossain Shahal
- Observing location
- USA, Utah (39.422519,-111.714358)
- Exposure
- 20 min.
- Telescope
- Celestron RASA 11" (iTelescope - T68), 279 / 620 mm
- Camera
- ZWO ASI071 MC
- Field of view
- 2.22° × 1.46° (scales linearly with crop size) Diffraction limit ≈ 0.5″; practical sampling ≈ 1.6″/pixel (≈3.2″ effective)
- Image processing
- Tanzila Tabassum
- Processing method
- Data preparation Stacking Foreground subtraction Star position calibration Spectrophotometric color calibration Stretching Sharpening and denoising using ML Color saturation
Astrophotographic information · Tanzila Tabassum
- Object type
- Emission and dark nebula
- Constellation
- Orion
- Distance
- 1350 to 1500 ly
- Angular size
- 60′ × 40′
- Physical size
- 6 ly and 3.5 ly
- Apparent magnitude
- 4.5
Astrophysical information