Description
ToupTek GS-250AR 50mm Aperture PAPO f/5 High Precision Astronomical Guide Scope with FSB-125R Rack-and-Pinion Focuser
Difference:
- Rackless Focuser (AC versions): FSB-125C rackless focuser with precision bearing guides and a classic Crayford-style mechanism for smooth focusing and stable optical alignment—ideal for light-load manual imaging.
- Rack-and-Pinion Focuser (AR versions): FSB-125R gear-driven focuser with precision bearing guides for higher focusing accuracy; compatible with ToupTek Astro AAF electronic focuser, suitable for autofocus and heavier payloads.
PAPO Apochromatic Optical Design, True Star-Color Reproduction:
- The GS Series guide scopes feature a proprietary three-element PAPO (planar apochromat with integrated field flattener) configuration with one ED element, effectively correcting chromatic aberration, astigmatism, and field curvature. Designed around a flat, well-corrected 1-inch image circle, they deliver crisp, pinpoint star images for accurate guiding, while also supporting visual use and entry-level night-sky/DSO imaging.
High-Transmission Coatings + Anti-Reflection Threads, Boost Guiding Sensitivity:
- All optical surfaces use broadband multi-layer AR coatings to minimize reflections and maximize transmission. The internal barrel is precision-machined with anti-reflection threads and additional stray-light suppression, greatly improving image contrast.
CNC Precision Machining, Fine Matte Finish:
- The tube, rings, and dovetail plate are CNC-machined from aluminum alloy for a balance of low weight and structural strength. Anodized surfaces provide wear and corrosion resistance suited to field astronomy. The fine matte texture is comfortable, durable, and non-slip.
Modular Structure for Maximum Flexibility:
- A proprietary universal M48 extension tube with anti-reflection treatment forms the main barrel, allowing flexible combinations to match optical path requirements - from visual observing to astrophotography.
Wide Compatibility · Rich Configurations, Seamless System Integration:
- Built for flexibility: support for 1-inch sensors, direct threaded connections, and multiple mounting points let the GS Series integrate smoothly with a wide range of cameras and setups.
Package Included:
- 1 x Guide Scope
- 1 x Dust Cover
Note:
- The GS-350 guide scope displayed in the picture is out of stock, for demonstration only.
Difference:
- Rackless Focuser (AC versions): FSB-125C rackless focuser with precision bearing guides and a classic Crayford-style mechanism for smooth focusing and stable optical alignment—ideal for light-load manual imaging.
- Rack-and-Pinion Focuser (AR versions): FSB-125R gear-driven focuser with precision bearing guides for higher focusing accuracy; compatible with ToupTek Astro AAF electronic focuser, suitable for autofocus and heavier payloads.
PAPO Apochromatic Optical Design, True Star-Color Reproduction:
- The GS Series guide scopes feature a proprietary three-element PAPO (planar apochromat with integrated field flattener) configuration with one ED element, effectively correcting chromatic aberration, astigmatism, and field curvature. Designed around a flat, well-corrected 1-inch image circle, they deliver crisp, pinpoint star images for accurate guiding, while also supporting visual use and entry-level night-sky/DSO imaging.
High-Transmission Coatings + Anti-Reflection Threads, Boost Guiding Sensitivity:
- All optical surfaces use broadband multi-layer AR coatings to minimize reflections and maximize transmission. The internal barrel is precision-machined with anti-reflection threads and additional stray-light suppression, greatly improving image contrast.
CNC Precision Machining, Fine Matte Finish:
- The tube, rings, and dovetail plate are CNC-machined from aluminum alloy for a balance of low weight and structural strength. Anodized surfaces provide wear and corrosion resistance suited to field astronomy. The fine matte texture is comfortable, durable, and non-slip.
Modular Structure for Maximum Flexibility:
- A proprietary universal M48 extension tube with anti-reflection treatment forms the main barrel, allowing flexible combinations to match optical path requirements - from visual observing to astrophotography.
Wide Compatibility · Rich Configurations, Seamless System Integration:
- Built for flexibility: support for 1-inch sensors, direct threaded connections, and multiple mounting points let the GS Series integrate smoothly with a wide range of cameras and setups.
Package Included:
- 1 x Guide Scope
- 1 x Dust Cover
Note:
- The GS-350 guide scope displayed in the picture is out of stock, for demonstration only.
Payment Terms
1. We accept PayPal,Payoneer,Visa Card,Google pay,Credit card etc.
2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
Shipping Terms
1. We will process the order within the handling time ,if you have any questions, please contact us via eBay message or email.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
Return Terms
If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. We will guide you the returning process for replacement or refund.
Custom Duties & Taxes
1. It is buyer's responsibility to cover the import duties, taxes.We do not charge any taxes and fees, and the possible taxes and fees will be collected by the platform or by third parties such as customs and carriers.
2. Please check with your country's customs office and inform us what/how much should declare before shipping.
2. Please check with your country's customs office and inform us what/how much should declare before shipping.
Feedback
1. Please kindly leave us a positive feedback and 5 star DSR if you satisfied with our product and service. Please feel free to contact us firstly if you have any problem with your order, we are responsible and credible seller and will solve the issue it for you asap.
2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.