Equipment
Reminders
- Start at 2.0 exit-pupil for DSO’s
- Ultrablock ideal range is below 10x/inch of aperture
Scopes
Name | Aper. | Length | F | Zoom | Max Mag | Max 1” | Max 2” | Dawes
--------|-------|--------|-----|------|---------|--------|--------|-------
ST80 | 80 | 400 | f/5 | 160x | +13.26 | 3.94° | 6.59° | 1.45”
AT102ED | 102 | 714 | f/7 | 204x | +13.78 | 2.21° | 3.69° | 1.14”
Eye Pieces
ST-80 AT102ED
Eyepiece | aFoV | Len | . | Mag | tFoV | Pupil | . | Mag | tFoV | Pupil
-----------|------|-----|---|-----|------|-------|---|------|------|-------
ATUWA2” | 82.0 | 28 | | 14x | 5.9° | 5.7mm | | 26x | 3.2° | 3.9mm
ATUWA1.25” | 82.0 | 13 | | 31x | 2.6° | 2.6mm | | 55x | 1.5° | 1.9mm
SV1351.25” | 40.0 | 21 | | 19x | 2.1° | 4.2mm | | 34x | 1.2° | 3.0mm
| 41.2 | 20 | | 20x | 2.1° | 4.0mm | | 36x | 1.1° | 2.8mm
| 42.4 | 19 | | 21x | 2.0° | 3.8mm | | 38x | 1.1° | 2.7mm
| 43.6 | 18 | | 22x | 2.0° | 3.6mm | | 40x | 1.1° | 2.5mm
| 44.8 | 17 | | 24x | 1.9° | 3.3mm | | 42x | 1.1° | 2.4mm
| 46.0 | 16 | | 25x | 1.8° | 3.2mm | | 45x | 1.0° | 2.3mm
| 47.2 | 15 | | 27x | 1.7° | 3.0mm | | 48x | 1.0° | 2.1mm
| 48.4 | 14 | | 29x | 1.7° | 2.8mm | | 51x | 0.9° | 2.0mm
| 49.6 | 13 | | 31x | 1.6° | 2.6mm | | 55x | 0.9° | 1.9mm
| 50.8 | 12 | | 33x | 1.5° | 2.4mm | | 60x | 0.8° | 1.7mm
| 52.0 | 11 | | 36x | 1.4° | 2.2mm | | 65x | 0.8° | 1.6mm
| 53.2 | 10 | | 40x | 1.3° | 2.0mm | | 71x | 0.7° | 1.4mm
| 54.4 | 9 | | 44x | 1.2° | 1.8mm | | 79x | 0.7° | 1.3mm
| 55.6 | 8 | | 50x | 1.1° | 1.6mm | | 89x | 0.6° | 1.1mm
| 56.8 | 7 | | 57x | 1.0° | 1.4mm | | 102x | 0.6° | 1.0mm