Manufacturer: Skywatcher
Product number: 20186

EUR 115,00

incl. 19 % VAT (DE)  
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rating: 5.0 of 5
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Skywatcher Field Flattener for Evoguide 50ED
The new Sky-Watcher field flattener for the compact Evoguide 50ED mini telescope is designed up to APS-C format (28 mm diagonal). It allows high-quality astrophotography with the very compact and lightweight telescope. The field flattener is screwed on instead of the extension tube of the 50ED and allows the connection of a camera with T2 thread connector. In addition, it has a receptacle for 1.25" barrels with two locking screws on the camera side.

The flange focal distance is 17.5 mm and is therefore suitable for most guiding and astro cameras. Perfect also when travelling in combination with Sky-Watcher´s small travel mounts like Star Adventurer (Mini) or AZ-GTi!

The Sky-Watcher Flattener contains two multi-coated lenses and comes with two high-quality anodized aluminum caps as dust protection.

The telescope is not included in the scope of delivery!
Type:Field flattener
Design:Doublet with FPL53 element
Inner diameter:31.7 mm (1.25")
Diameter flattened field:28 mm
Diameter of corrected image field:
Focal length extension factor:1x
Backfocus:17.5 mm
Connection:T2 (M42x0.75) at both sides / camera side also 1.25" receptacle
Length:45 mm without male thread
Material:aluminium / optical glass
Net weight:150 g
Field flattener
2 green anodised aluminium screw-on end caps

How do you have to measure the working distance??

Answer from Teleskop-Service:
The working distance is measured from the beginning of the connection thread on the housing of the corrector (see example picture):

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Written by Pelle Ussing
on 2023-09-28

"Perfect fit - Excellent product "

Written by Werner Löffler
on 2022-03-29

"Flattener wird für Evoguide 50ED verwendet. Damit kann ich den Evoguide 50ED als Widefield-Teleskop einsetzen. Allerdings ist die Focuslage etwas eingeschränkt, ich verwende die ZWO ASI 183MCPro, geht gerade noch. Filter muss im Zwischenring eingeschraubt werden. Die Bildschärfe ist aber bis in die Ecken sehr gut."

Written by Rolf Schmutz
on 2022-03-17

"funktionier gut (für Kameras mit 17.5 mm Abstand zum Sensor), habe den Korrektor auch zum Guiden gleich drangelassen"

Written by Luc Jaspers
on 2020-10-22

"guidescope becomes telescoop, with phd 2 cameras imaging in 1 session. Dubble use of guider, guiding and imaging."