Svbony SV209 Field Flattener 1.0x for SV550 80F6 Astrophotography M63x1 Connection Black
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Specifications
- Brand Name
- svbony
- Type
- -
- Origin
- Mainland China
- High-concerned chemical
- None
- Model Number
- SV209
- 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
Product Description
SVBONY SV209 1.0x Field Flattener Review
//www.youtube.com/watch?v=r6TGd7M1EX0&t=6s
Author:Natural Portraits
SV209 1.0x Field Flattener
The SV209 field flattener is designed for SV550 80F6 OTA, which can effectively correct field curvature and improve the image quality. And 1.0 field flattener -- no change of focal length to the focal plane.
Components
Adapter: M63x1 & M48x0.75
M48x0.75 female thread for 2" filter
M63x1 male thread for connection to telescope
Fully illuminated field: 45 mm
Featuring 45mm large target area effective field of view, SV209 not only supports half frame camera, also full frame camera.
Working Distance: 55mm/ 91.5mm/ 103mm
Working distances: 55 mm and 91.5mm (if you leave out the M63 extension).
Maximum working distance with M63x1 internal threads: 103 mm - space is enough to accommodate almost all adjustments.
Specification:
1.Brand: SVBONY
2.Model: SV209
3.Connection at telescope side: M63x1 male thread
4.Connection 1 at camera side: M63x1 thread female - working distance 103 mm
5.Connection 2 at camera side: M48x0.75 male thread - working distance 55 mm or 91.5 mm
6.Fully illuminated field: 45 mm（Support Full Frame Sensors）
7.Number of elements: 2 lenses
8.Factor: 1.0 - no change of focal length to the focal plane
9.Coating: FMC
10.Diameter of the housing: 67mm
11.Length: 87.5 mm without the male thread
Pros & Cons
Pros
- 1.0x magnification with no change to focal length
- Corrects field curvature to improve astrophotography image quality
- Supports full frame sensors with a 45mm fully illuminated field
- Comes with FMC anti-reflective lens coating
Cons
- Only compatible specifically with the SV550 80F6 telescope
- No detailed instructions included in the product listing
- Only two internal lenses, which may limit performance for advanced use cases
Common Questions
What telescope is this SV209 field flattener designed for?
This SV209 1.0x field flattener is purpose-built for the SV550 80F6 OTA astrophotography telescope.
What thread connections does this field flattener have?
It has an M63x1 male thread on the telescope side, an M63x1 female thread with 103mm working distance, and an M48x0.75 male thread with 55mm or 91.5mm working distance on the camera side.
Will this field flattener work with full frame sensors?
Yes, this flattener supports fully illuminated 45mm fields and full frame sensors.
How many lenses does this SV209 field flattener use?
This field flattener uses a total of 2 lenses with FMC anti-reflective coating.
What are the physical dimensions of this unit?
The housing has a 67mm diameter, and the total length without the male thread is 87.5mm.
Product information last updated on December 10, 2025