The back focal length is advised by telescope manufacturers. Since most telescopes have a 55mm back focal length, we are here to provide detailed instructions for all ASI cooled cameras.…
Dear Valued Customers,
With the Chinese New Year approaching, please note our holiday schedule:
Shipping Pause: Jan 21–Feb 6, 2025
Service Hiatus: Jan 22–Feb 6, 2025
Responses to messages may be slightly delayed during this time. Regular service and shipping will resume on Feb 6, 2025.
Thank you for your understanding. Wishing you a happy and prosperous Chinese New Year!
Best regards,
Suzhou ZWO Co., Ltd.