Sharpstar Optics

Sharpstar 2" Triplet 0.95x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 Thread

Sharpstar 2" 0.95× coma corrector can be applied to most marketable Newtonian reflective astrographs. It’s of high quality and easy to use. Sharpstar 2" 0.95× coma corrector is designed for APS-C imaging circles(28mm), suitable for Newtonian reflectors with focal ratio between f/3 and f/6, and aperture size from 150mm to 600mm. The reduction factor is 0.95×, thus it can reduce the original f/4, f/5 and f/6 respectively to f/3.8, f/4.75 and f/5.7, effectively shortening the exposure time. Besides, it can improve the star shapes. The diameter of stars in the center of the field can be limited within 10um.

Sharpstar 61EDPHIII Full-Frame Flattener

Sharpstar 2" Quaduplet 1x MPCC Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 Thread

Following the advent of 0.95x coma corrector for Newtonian reflector, SHARPSTAR optics has well received the favor of customers with high praise.

เลนส์ถ่ายดาว Sharpstar 50EDPH 50mm f/5.5 ED Triplet Apo Refractor Telescope

The Sharpstar 50EDPH is an OTA with a 50mm aperture, 275mm focal length, and f/5.5 native focal ratio. The 50EDPH is compact and lightweight, with a gross weight of 1.0kg (including the dovetail plate) and a total length of 196mm. With excellent optical quality, user-friendly mechanical design, and a size that can be grasped in one hand, the 50EDPH is a perfect choice for daily observation and shooting.

The 50EDPH is a triplet air-spaced APO design, including two pieces of ED glass. The triplet design is rare for a telescope of such a small aperture, and the chromatic aberration control is exceptional.

Sharpstar 3" Quadruplet 0.85x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors 

Sharpstar 30085NTRD coma corrector can shorten the original focal ratio of f/4 to f/3.4, greatly shortening the exposure time. Besides, the Sharpstar 30085NTRD coma corrector is considerately designed with many threads. At the front of the corrector, there is M82×1 male thread for the connection to our 3" focuser. At the back of the corrector, there is tapped with M76×1 male thread, M68×1 female thread and M54×0.75 female thread, which can be used to thread on our M54 to M48 camera adapter ring. The back-focus is standard 55mm, starting from the M54 thread(camera end) to focal plane.

กล้องดูดาว Sharpstar 76mm 76EDPH f/5.5 ED Triplet Apo Refractor Telescope สีแดง

Sharpstar has been making refractors for many years for well-known worldwide astronomy vendors, and they’re now marketing their own premium apochromatic refractors at a surprisingly affordable price. The Sharpstar 76EDPH is the second in their series of instruments under the Sharpstar brand that’s quickly gaining a reputation for precision instruments for visual observation and astrophotography.

กล้องดูดาว Sharpstar 130mm f/2.8 HNT Hyperbolic Newtonian Astrograph, สีแดง #13028HNT

• 130mm Newtonian astrograph with super-fast f/2.8 optics and 55mm backfocus
• Fully and rigorously tested on site for cosmetics, mechanical operation, and optical performance by a master optician to ensure excellent overall telescope operation and customer satisfaction (an Agena exclusive service) 
• Hyperbolic primary and 2-element ED corrector lens deliver sharp flat images over a large 44mm image circle
• 15.5” long carbon fiber tube and CNC machined aluminum fittings make for a durable yet lightweight instrument 
• 2.5” rack and pinion focuser handles heavy loads without slipping; includes 1.25" holder for smaller cameras or eyepieces
• Includes carrying handle, Losmandy and Vixen dovetail plates, and hard carrying case

กล้องดูดาว Sharpstar 150mm f/2.8 HNT Hyperbolic Newtonian Astrograph  #15028HNT - สีแดง

• 150mm Newtonian astrograph with super-fast f/2.8 optics and 55mm backfocus
• Fully and rigorously tested on site for cosmetics, mechanical operation, and optical performance by a master optician to ensure excellent overall telescope operation and customer satisfaction (an Agena exclusive service) 
• Hyperbolic primary and 3-element corrector lens deliver sharp flat images over a large 44mm image circle
• 18” long carbon fiber tube and CNC machined aluminum fittings make for a durable yet lightweight instrument 
• 2.5” rack and pinion focuser handles heavy loads without slipping; includes 1.25" holder for smaller cameras or eyepieces
• Includes carrying handle, Losmandy dovetail plate, and hard carrying case