- Commodity name: SQA55
- Commodity ID: SQA55
Quintuplet air-spaced SD glass Petzval astrograph, which can be used for astrophotography and daily photography.

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	*M480.75 (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

Promotional Video·Deep Space Astronomy

Promotional Video·Landscape Photography
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

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	*M480.75 (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