Levenhuk Ra f/4 Newtonian Coma Corrector

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The price is valid only for the online store and may differ from the prices in retail stores.

Improves image quality in reflector telescopes

Availability

Product ID	50755
Brand	Levenhuk, Inc., USA
Warranty	2 years
EAN	5905555006468
Package size (LxWxH)	5.5x3.1x3.1 cm
Shipping Weight	1 kg

Description

The Levenhuk Ra f/4 Newtonian coma corrector is compatible with Newtonian reflectors of any brand. On f/4 reflectors, it minimizes comatic aberration, which greatly narrows the view. The corrector will allow you to observe the entire field of view with the same clarity both in the center and at the edges.

The Levenhuk Ra coma corrector doesn't affect the focal length and magnification of the telescope. It is suitable for 2" focusers.

Features:

For f/4 Newtonian reflectors
Doesn't change the optical system magnification
Reduces comatic aberration
2" barrel diameter

The kit includes:

Coma Corrector
Protective caps – 2 pcs

Specifications
Compatibility	f/4 Newtonian reflectors
Optics material	optical glass
Barrel diameter, "	2
Operating temperature range, °C	−5… 35
Usage	General use product. May be used by kids over 3 years old.

specifications

Product ID	50755
Brand	Levenhuk, Inc., USA
Warranty	2 years
EAN	5905555006468
Package size (LxWxH)	5.5x3.1x3.1 cm
Shipping Weight	1 kg

References
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Questions and Answers

Martin (2022.08.18)

Hi thank you for your quick response, I am just wondering whether it can be used with a DSLR camera. At present (without a CC) I have to move the focuser almost all the way in to achieve focus with a reflecting telescope (I have about 10mm of inward travel to spare), It looks from the images as though adding this device into the optical train would prevent me from focusing. Does the eyepiece holder unscrew? and does it have threads to attach a T-ring?

Customer service:

Dear Martin, thank you for your inquiry. Seems that the Levenhuk Ra f/4 Newtonian Coma Corrector will not fit your needs as it comes without the thread. Currently this corrector is available in our remote warehouse in Czech Republic only. Is there any additional information you might need?

Martin (2022.08.18)

Will I be able to reach prime focus using this Coma Corrector with a Skywatcher Explorer 200p? I currently have about 10mm of back focus, does this Coma Corrector move the focal point outwards at all? Also does it have threads to attach a 2" filter?

Customer service:

Hello Martin,

Thank you for your request.

Levenhuk Ra f/4 Newtonian Coma Corrector (50755) minimizes coma - optical distortion, which appears mainly at the edges of the field of view. It does not affect the focal length and magnification of the telescope.
It has threads for a 2" filter.

Is there any additional information you might need?

Justin BENNET (2014.04.19)

Is it suitable for f/5 Newtonian?

Customer service:

Yes, it's suitable in theory, but Levenhuk Ra Coma Corrector is recommended for use with f/4 Newtonian telescopes.

Tammie Allen (2013.06.05)

This corrector is only for f/4? Does it work on f/6?

Customer service:

Levenhuk Ra Coma Corrector for Newtonian telescopes suits the f/4 more. It's less effective for f/6.

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