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View the Latest Correctors, Focal Reducers & Flattener Reviews

Item
Submitted By
Baader 2
Baader 2" MPCC Multi Purpose Coma Corrector - New MkIII Version # MPCC 2458400
5.0
correct coma without adding CA
i was using a GSO coma corrector with my 8" F4 GSO Newtonian for astrophotography. it worked good for coma correction but it also introduced some heavy chromatic aberration to the image. so i have decided to try this. its twice as expensive and ...
GSO 2
GSO 2" 0.5x Focal Reducer
5.0
Focal Reducer
Great quality
HoTech 2
HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582
5.0
Good product
t was used with Vixen ED-103S.
The surrounding stars are well revised.
It is good that the screw of M42 is a little longer.
Baader 2
Baader 2" MPCC Multi Purpose Coma Corrector - New MkIII Version # MPCC 2458400
5.0
Great quality
Works as promised! Thanks Agena!
Baader 2
Baader 2" MPCC Multi Purpose Coma Corrector - New MkIII Version # MPCC 2458400
5.0
woke up from a coma (corrector)
i tried another coma corrector, and it actually made coma where there weren't any. In contrast, the Baader Mark III coma corrector worked VERY WELL. I use both a 6" f5 and an 8" f5 orion reflector telescopes, and coma correction made a...
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
4.0
Vague back focus distance (70-75
Vague back focus distance (70-75 mm) and need to purchase additional spacers to get optimal performance is the main concern.
GSO 2
GSO 2" 0.5x Focal Reducer
5.0
2 inch focal reducer
Works great with my Evolution 8 to utilize my Atik Infinity.
HoTech 2
HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582
5.0
Agenda field flattener
Stars are sharp. Solid construction.
Baader 2
Baader 2" MPCC Multi Purpose Coma Corrector - New MkIII Version # MPCC 2458400
5.0
I works great. Wish I
I works great. Wish I bought it sooner
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
4.0
Great with a spacer ring!
Spectacularly flat view on my GSO 12" Dobs, especially with ES 82 degree 30mm. Knocking off one star because it needs an extra spacer ring to work properly. A 3/4" spacer (plus existing parfocalizing ring on the eyepiece) did the trick for ...
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
4.0
Useful but not essential. Hard to use
First off, make sure you buy a set of spacers with this coma corrector. This product requires ~75mm from image plane to the corrector. For imaging with a DSLR, this is usually a single 20mm spacer. There are no directions provided with this item. I ...
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
5.0
great value for money
recently bought one to be used with GSO 8" F4 scope and nikon D5300 DSLR. i can see very good results with it. more details on how i connected it to DSLR and results can be found here. http://www.astronomyforum.net/astro-imaging-forum/246218-ast...
HoTech 2
HoTech 2" SCA Field Flattener with T-Thread for f/5 - f/8 Refractor Telescope # FF582
5.0
High quality tool!
I haven't had the chance to test it, the quick once over looks very impressive, well controsted and good looking! It makes my filter wheeler and telescope look very elegant .., thanks.. Rich
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
5.0
I like your company
Good price and everything was as advertised. Came on time and in great shape. This is the third item purchased recently and all have met my expectations.
Tele Vue DIOPTRX Astigmatism Corrector - 3.50 # DRX-0350
Tele Vue DIOPTRX Astigmatism Corrector - 3.50 # DRX-0350
5.0
Super crisp pinpoint stars
I called TV support about my concerns regarding my new TV31 Nagler, all stars were elongated - not pinpoint like my higher power EPs (5-17mm) I thought something was wrong with my new $650 Nagler - VERY dissapointed to say the least! TV explained &am...
William Optics 2
William Optics 2" 0.8x Reducer / Field Flattener 6A for GT102 Telescope # P-F6A-GT102
5.0
William Optics GT102 Reducer/Flattener
I purchased the William Optics GT102 reducer/flattener for use with an Explore Scientific ED 102 F/7. Coupled with a Canon EOS T5, image is correct across the entire field with no vignetting. I could not be happier with the results.
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
4.0
gso coma corrector
Works well visually, cleaned up 70-80% of field with my previously nasty inexpensive 2" eyepieces in my 5" f5 scope. Needs a spacer ring to work properly with my Nikon dslrs- 1/4" I bought here looks good on initial testing, I've ...
GSO 2
GSO 2" Photo-Visual Coma Corrector for Newtonian Telescopes
5.0
Excellent Coma Corrector
An essential piece of equipment for imaging with a Newtonian astrograph telescope. Virtually eliminates all appearance of coma in DSLR images. Very pleased with the performance and quality of this product. Highly recommend it. There are other, much m...
GSO 1.25
GSO 1.25" 0.5x Focal Reducer
5.0
Good Quality
Threaded on both ends for additional filters. Solid. Good optics.