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Primary mirror aperture mask


PeterBolt
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2 hours ago, PeterBolt said:

I've just fitted this mask to my primary mirror...I am hoping it will improve my star shape.  Does anyone else use one?

 

https://www.teleskop-express.de/shop/product_info.php/language/en/info/p12360_Wega-Primary-Mirror-Baffle-for-Skywatcher-8--Newtonians.html

 

20211007_134630.thumb.jpg.ce0b3d42e4efc633d1b9f149161cdb1e.jpg

 

I didn't even know they existed. I hope it sorts your problems out.

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The 130pds is notorious for flaring round the stars lots of people fit one to that scope,I myself will be fitting one to my 130pds very soon as I’ve just ordered from the same company obviously the 130pds version

Edited by Craig a
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45 minutes ago, Craig a said:

The 130pds is notorious for flaring round the stars lots of people fit one to that scope,I myself will be fitting one to my 130pds very soon as I’ve just ordered from the same company obviously the 130pds version

 

Just to let you know that I had to buy slightly longer screws (m4x25) otherwise the clips were pinching the mirror. 

 

https://www.ebay.co.uk/itm/M2-5-M3-M4-M5-M6-Socket-Button-Head-Screws-10-9-High-Tensile-Black-Allen-Bolts-/273341455760?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l6249&mkrid=710-127635-2958-0

 

The mask was delivered in about 4 days and I didn't have to pay any import tax 😃

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9 hours ago, paul said:

I'm interested to see how it works out. My Bresser is pretty good now I shortened the focuser, reducing some of the asymteric flares would be a nice tweak. 

It works by blocking the very edge of the primary mirror from the turned down edge that causes light to scatter causing flaring on brighter stars 

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