| 12" Mirror, F 10 | D=305MM | FL=3048MM | |||||||||
| Last Update: 11/07/03 | FL=1920MM if F6.3 | ||||||||||
| EYE PIECE IN MM | MAGNIFI-CATION @ F.10 | MAG @ F6.3 | EXIT PUPIL @ F10 | EXIT PUPIL @ F6.3 | AFD | True Field ARC Min ' @F10 | True Field ARCMin ' @F6.3 | Eye Relief mm | Model | MFG | 2" |
| 3.5 | 870.86 | 548.57 | 0.29 | 0.46 | Barlow w/7mm |
||||||
| 5 | 609.60 | 384.00 | 0.42 | 0.66 | 50 | 4.70 | 7.46 | 20 | Omni Plossl |
Celestron |
|
| 6 | 508.00 | 320.00 | 0.50 | 0.79 | 50 | 5.64 | 8.95 | 20 | Omni Plossl |
Celestron |
|
| 7 | 435.43 | 274.29 | 0.58 | 0.93 | 82 | 10.79 | 17.13 | 12 | Nagtype6 |
Tele Vue |
|
| 9 | 338.67 | 213.33 | 0.75 | 1.19 | 50 | 8.46 | 13.43 | 20 | LV |
Vixen |
|
| 12 | 254.00 | 160.00 | 1.00 | 1.59 | ILLM-CH |
Meade |
|||||
| 12 | 254.00 | 160.00 | 1.00 | 1.59 | 82 | 18.50 | 29.37 | 17 | Nagtype4 |
Tele Vue |
Or |
| 13.8 | 220.87 | 139.13 | 1.15 | 1.83 | SWA |
Meade |
|||||
| 16 | 190.50 | 120.00 | 1.33 | 2.12 | 50 | 15.04 | 23.88 | SP-2ea |
Pocono |
||
| 16 | 190.50 | 120.00 | 1.33 | 2.12 | 82 | 24.66 | 39.16 | 10 | Nagtype5 |
Tele Vue |
|
| 22 | 138.55 | 87.27 | 1.83 | 2.91 | 82 | 33.91 | 53.84 | 19 | Nagtype4 |
Tele Vue |
Yes |
| 26 | 117.23 | 73.85 | 2.17 | 3.44 | 52 | 25.42 | 40.35 | SP |
Meade |
||
| 30 | 101.60 | 64.00 | 2.50 | 3.97 | Ultima |
Celestron |
|||||
| 31 | 98.32 | 61.94 | 2.58 | 4.10 | 82 | 47.79 | 75.86 | 19 | Nagtype5 |
Tele Vue |
Yes |
| 40 | 76.20 | 48.00 | 3.33 | 5.29 | 44 | 33.09 | 52.53 | SP |
Meade |
||
| 50 | 60.96 | 38.40 | 4.17 | 6.61 | 50 | 47.00 | 74.61 | SV |
GSO |
Yes | |
| 62 | 49.16 | 30.97 | 5.17 | 8.20 | 68 | 79.26 | 125.82 | Plossl |
HndsOnOptc |
Yes | |
|
|||||||||||
| Common Ojects | Angular Size | 1 degree = 60' = 3600" | |||||||||
| Adromeda Galaxy | 160'x36' | ||||||||||
| Great Orion Neb | 66'x60' | ||||||||||
| Moon | 30' | ||||||||||
| M13 | 16.6' | ||||||||||
| M57, Ring Nebula | 83"x59" | ||||||||||
| Jupiter | 50" | ||||||||||