Quintuplet Petzval refractor with 55 mm aperture and 264 mm focal length (f/4.8), supporting a 44 mm full-frame image circle.
Specifications
| SQA55 Parameters | |
|
Aperture size |
55mm |
|
Focal length |
264mm |
|
Focal ratio |
f/4.8 |
|
Objective lens |
Quintuplet petzval APO（One piece of SD glass, one piece of ED glass） |
|
Image circle |
44mm |
|
Aperture blades |
14 pieces |
|
Graded Aperture |
f/4.8-f/22 |
|
Closest Focus Distance |
5m |
|
Focusing mode |
Manual focus |
|
Filter Diameter |
M67 |
|
Total length |
316mm (inclulding dew shield); 244mm (without dew shield) |
|
OTA weight |
1.84kg |
|
Total weight (including handle & dovetail plate) |
2.18kg |
|
Rear-end adapter |
M48*0.75 (with M48×0.75 filter thread) |
|
Rear-end connection distance |
Support 50-60mm range (Recommended connection length is 55mm) |
|
Standard package items |
a SQA55 OTA, a military-grade waterproof hand-carrying case |
| Product Size Diagram |
| SQA55 Connection Diagram |
| SQA55 AFkit Electronic Focuser Assembly Diagram |
Video
| Promotional Video·Deep Space Astronomy |
| Promotional Video·Landscape Photography |
Images
Diego Celery | Carina Nebula, C92 | ASKAR SQA55 + ZWO ASI2600MM Pro
Diego Celery | NGC 2327 | ASKAR SQA55 + ZWO ASI2600MM Pro
李昂 | IC443、NGC 2175 | ASKAR SQA55 + ZWO ASI2600 MC Air
小卡子、万一 | NGC1499 | ASKAR SQA55 + ZWO ASI2600MM Pro
Sandwall | IC434 | ASKAR SQA55 + ZWO ASI2600Mc Pro
Matthias Steiner | NGC7822 | ASKAR SQA55 + ASI2600mcp
Mr.ZhuLiQun | NGC7000 | ASKAR SQA55 + ZWO ASI 6200
sandwall & ARK | M20+M8 | ASKAR SQA55 + ZWO ASI 2600MC Pro
Drew Evans | THE GREAT RHO OPHIUCHI CLOUD COMPLEX | ASKAR SQA55 + ZWO ASI2600MC DUO · ZWO ASI2600MM Pro
TianXingZhe | NGC6888 | ASKAR SQA55 + ZWO ASI2600MC
sandwall | Veil Nebula | ASKAR SQA55 + ZWO ASI 2600MC Pro
