Feature

●SV209 is a special field flattener for SV550 80F6 OTA; which can effectively improve the image quality problem of SV550 OTA fringe field curvature
●SV209 keeps the focal length and focal plane position of the primary mirror unchanged while improving the field curvature problem
●The package of SV209 is equipped with an M63 extension tube and an M48 adapter ring to ensure that the back focal length of the flat field mirror is the astronomical conventional 55mm length
●The effective field of view of the 45mm large target surface supports not only half-frame cameras; but also full-frame cameras
●Built-in 2-inch filter mounting thread; supports 2-inch filter installation; customers do not need to buy a filter adapter ring separately

Description

SV209 1.0x Flattener Corrects the Field for SV550 80F6 Astrophotography

Calculation method of 55mm back intercept

First unscrew the 2-inch adapter ring of the SV550 80mm APO, and then connect the three parts of the field flattener. The installation sequence of the three parts is shown in the figure above(dont confuse the order) . Then connect the mount (not included) and camera compatible with Canon to shoot.

SV550 80 OTA Field Flattener

Most astronomical telescopes have a certain field curvature problem, which can be improved with SV209. The SV209 is a special field flattener for SV550 80F6 OTA, which can effectively improve the field curvature of fringe field images. Great for astrophotography.

M63 Extension Tube

Equipped with M63 extension tube and M48 adapter ring to ensure that the back focal length of the field flattener is 55mm in astronomical tradition.

Thread size: M63x1 male thread

M48 Adapter Ring

Built-in 2-inch filter mounting threads support 2-inch filter mounting.

By connecting the adapter ring, you can match any 2-inch filter you need to meet your different shooting needs.

Connectable CAA Field Conditioner

SV209 can be installed to create flat images. At the same time, it can be installed in combination with the SV210 (sold separately) to adjust the field of view of the image.

1 Field Flattener 2 Package Includes

Specifications

Connection at telescope side:	M63x1 male thread
Connection 1 at camera side:	M63x1 thread female - working distance 103 mm
Connection 2 at camera side:	M48x0.75 male thread - working distance 55 mm or 91.5 mm
Fully illuminated field:	45 mm（Support Full Frame Sensors）
Number of elements:	2 lenses
Factor:	1.0 - no change of focal length to the focal plane
Coating:	FMC
Diameter of the housing:	67mm
Length:	87.5 mm without the male thread

Match

SV550 APO telescope	SV210 Camera Angle Adjuster	SV405CC Telescope Camera
F/6 focal ratio A great travel telescope for observation and astrophotography	CAA 360-degree rotator Improve the stability and portability of the shooting process	IMX294 CMOS sensor Back-illuminated sensor – improving sensitivity and reducing noise
Triplet apochromatic optics Significantly reduces edge dispersion resulting in blue fringing problems	Camera angle adjuster Can adjust the shooting angle of the camera	AR Coating Optical Glass Protective glass increases the transmittance of the infrared band

SV550 APO telescope

SV210 Camera Angle Adjuster

SV405CC Telescope Camera

F/6 focal ratio

A great travel telescope for observation and astrophotography

CAA 360-degree rotator

Improve the stability and portability of the shooting process

IMX294 CMOS sensor

Back-illuminated sensor – improving sensitivity and reducing noise

Triplet apochromatic optics

Significantly reduces edge dispersion resulting in blue fringing problems

Camera angle adjuster

Can adjust the shooting angle of the camera

AR Coating Optical Glass

Protective glass increases the transmittance of the infrared band

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We are SVBONY, a young and passionate team of astronomy and sports optics products. We start from 2014, and our team are working for R&D practical optical products for people who want to get involved in nature and space exploration. Our products include Astronomy Telescope, Astronomy Camera, Astronomy Accessories, Microscope and more.

We sincerely hope that under the influence of SVBONY, more people will fall in love with exploring the starry sky
What makes our products unique?

Behind the SVBONY products, there is a team in which everyone is creative, collaborative and responsible. Weve made a niche category, the reason is that we want people to see more realistic images in the original way, instead of just upgrading the camera on the phone.

Why do we love what we do?

We do think optics products are practical and educational, which connects people to the world, not just for a small part of person, but for everyone. SVBONY leads us to a more beautiful world which we usually can’t see, and we want to bring this beauty to everyone.