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

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SKU

SSOP-CRC3085

ผู้ผลิต

Sharpstar Optics

จำนวนในสต๊อก

เหลือ 1 ชิ้น

น้ำหนัก

1,000.00 g

ราคาของเรา

฿23,990.00

ตัวเลือก

จำนวน (เหลือ 1 ชิ้น)

(จาก 1 ถึง 1)

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

Newtonian reflector is one of the most sought-after astrographs among astronomy enthusiasts because it’s relatively easy to understand and operate, suitable for most amateurs. There is no sophisticated demand for a Newtonian reflector in visual observation, but when it comes to astrophotograph, a well-functioning Newtonian reflective system must be applied with a proper coma corrector.

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 1

Sharpstar 30085NTRD coma corrector is destined to heal the above situation. This 3" 0.85× coma corrector allows full-frame imaging, effectively producing stunning deep-sky pictures.

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 2.jpg

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.

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085

Note: The images show the coma corrector with a focuser. WIth this purchase, you will receive the only the coma corrector.

The star will obviously be enhanced with the help of Sharpstar 30085NTRD coma corrector, and other aberrations will also be effectively reduced. It’s an indispensable component in a Newtonian reflective system.

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 in focuser

Note: The images show the coma corrector with a focuser. WIth this purchase, you will receive the only the coma corrector.

Specifications

Application：200-800mm, f/3-f/6 parabolic reflector
Reduction factor：0.85×
Image circle：44mm
Lens：quadruplet
Outer diameter：75mm
Back-focus：55mm(starting from the M54 female thread [camera end])
Length：119.8mm
Coating：full-surface multi-layer coatings
Weight：0.85kg

Schematics

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 dimension diagram

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 1

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 2

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 3

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 4

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 5

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 spot diagram 6

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 optical configuration

Sharpstar 3-inch Quadruplet 0.85x Reducer Coma Corrector for f3 f6 Newtonian Reflectors CRC3085 relative illumination

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