Traditional Culture Encyclopedia - Photography and portraiture - Why Catadioptric Telescopes Are Suitable for Viewing Deep Sky Objects
Why Catadioptric Telescopes Are Suitable for Viewing Deep Sky Objects
You are saying the opposite. Catadioptric telescopes are not suitable for observing deep sky objects, but are more suitable for observing planets, the moon and the sun (Gabbard membrane).
Because the focal ratio of catadioptric telescopes is very large. The general Skajo ratio is about 10 (such as Celestron's C8, C9.25, C11), and the Macajo ratio is more than 12 (such as Boguan's 130 and 150 Macajo ratio). The large focal ratio results in low imaging brightness and small field of view, and deep sky objects have large visual areas and are very dark, so the catadioptric type is not suitable for deep sky objects.
To observe deep sky objects, you can consider apochromatic refractors (APO) for photography, and large-aperture DOB for visual inspection.
- Previous article:Is there any investment value in buying a house in Shenyang now?
- Next article:The culture of the window of the world beer festival
- Related articles
- On the back of the moon, is it true in encyclopedia?
- Bazhou photographer's association
- What about Tianjin Boya Shengdian Stationery Co., Ltd.?
- Yi Nengjing's daughter Mi Li took a recent photo. She became a domineering princess. Netizens are looking forward to her growing up. What about you?
- Dark green best color matching chart
- How to write the employment and entrepreneurship plan?
- Implementation plan of cultural activities on May 1 ST Labor Day
- What's the matter? You often get hot palms.
- Running conditions of Quancheng College of Jinan University
- The best place to see cherry blossoms in Shenzhen