Equipment:
Some interesting data about telescope/lens and cameras I use.
| Camera |
Lens / Telescope |
Reducer/
Barlow |
Field |
Pixel scale |
Daves
limit |
| Canon 5D Mk I |
TS130, 910 mm f/7 |
1x |
2.25x1.5o |
1.86"/pixel |
0.89" |
| Canon 6D |
TS130, 910 mm f/7 |
1x |
2.25x1.5o |
1.48"/pixel |
0.89" |
| Nikon D800* |
TS130, 910 mm f/7 |
1x |
2.25x1.5o |
1.11"/pixel |
0.89" |
| ZWO ASI6200MM* |
TS130, 910 mm f/7 |
1x |
2.25x1.5o |
0.85"/pixel |
0.89" |
| FujiFilm GFX 50 R* |
TS130, 910 mm f/7 |
1x |
2.76x2.1o |
1.20"/pixel |
0.89" |
| |
|
|
|
|
|
| Canon 5D Mk I |
TS130, 682 mm f/5.2 |
0.75x |
3x2o |
2.48"/pixel |
0.89" |
| Canon 6D |
TS130, 682 mm f/5.2 |
0.75x |
3x2o |
1.93"/pixel |
0.89" |
| |
|
|
|
|
|
| Canon 5D Mk I |
Pentax 500 mm f/4.5 |
1x |
4.1x2.7o |
3.38"/pixel |
1.05" |
| |
|
|
|
|
|
| Canon 6D |
Pentax 645 300 mm f/4 ED |
1x |
6.8x4.5o |
4.50"/pixel |
1.55" |
| Nikon D800* |
Pentax 645 300 mm f/4 ED |
1x |
6.8x4.5o |
3.36"/pixel |
1.55" |
| ZWO ASI6200MM* |
Pentax 645 300 mm f/4 ED |
1x |
6.8x4.5o |
2.59"/pixel |
1.55" |
| FujiFilm GFX 50 R* |
Pentax 645 300 mm f/4 ED |
1x |
8.4x6.3o |
3.65"/pixel |
1.55" |
| |
|
|
|
|
|
| Canon 6D |
Pentax 67 165 mm f/2.8 |
1x |
12.4x8.3o |
8.2"/pixel |
1.97" |
| Canon 6D |
Sigma APO 150 mm f/2.8 (f/4) |
1x |
13.6x9.1o |
9"/pixel |
3.09" |
| Canon 350D |
Canon 50 mm f/1.8 (f/4) |
- |
24.9x16.8o |
26"/pixel |
9.28" |
| Canon 6D |
Canon 50 mm f/1.8 (f/4) |
- |
39.4x26.8o |
27"/pixel |
9.28" |
| Canon 6D |
Zenitar 14 mm f/2.8 |
- |
180o diagonal |
96"/pixel |
23.2" |
*
Future plans or dreams.
Daves limit is the theoretical resolution of the telescope/lens.
It depends on the diameter of the lens and the wave length.
In this case it's calculated for the green wave length.
" stands for arc seconds, one degree is 3600".
The Moon is 1800" wide, Andromeda galaxy 10'000" wide.
The stability of the atmosphere limits the resolution, often called seeing, very good seeing is 2".
More to read about my equipment: Equipment.
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