ok blow up 200% tonight with the flattener
(http://farm3.static.flickr.com/2502/4201270462_4b6dae76fd_o.jpg)
origional image without
(http://farm3.static.flickr.com/2685/4200517263_9eb07491a7_o.jpg)
full frame with flattener
(http://farm3.static.flickr.com/2732/4201276296_8c960f66e9_o.jpg)
Chris,
That's looking very good.
Here are the tests I did with the WO Mk2 0.8x flattener - with the spiky stars in the corners:
http://forum.orpington-astronomy.org.uk/index.php?topic=5105
Wonder if it's too late to ask Santa Claus for the Skywatcher flattener?
Mark
Not perfect but for what is a relatively inexpensive chunk of glass it does an amazing job on a near APS chip. It's certain to become one of the must have accessories for the ED80... I wonder how it would work on some of the WO scopes?
Robert
I thought that this 0.85 FR only fits the new DSPRO Black Diamond scopes & the fitting on the gold Skywatcher pro ED80 is not suitable?
(had the colour wrong)
Hi,
I think a) when I focus better and b) when I use the OAG it will probably improve the image, but I tell you what if you bought one of these and a second hand ED80 £300 would give you a hell of a setup. Just need to run it through CCD Calc to see how flat the image is, without it was 35% curved.
And this was the top left corner at 200% at 100% the star look pretty tight. Needless to say I'm happy I get to keep my ED80 :-)
Chris
Quote from: Fay on Dec 21, 2009, 09:25:58
I thought that this 0.85 FR only fits the new DSPRO Black Diamond scopes & the fitting on the white Skywatcher pro ED80 is not suitable?
Hi Fay,
These are the same just black with a 1/10 reducer on the focuser, the equinox is the one it does not work with.
Chris
Quote from: Space Dog
... when I use the OAG it will probably improve the image
Does your camera have the integrated guiding port?
Presumably you have to attach a guide camera to this?
I'm very interested in how you get on.
Mark
Hi,
I did not get the one with the guide port because the back focus goes up quite a lot, but I'm going to get the TS OAG, this is 9mm long leaving a 10mm spacer required for any t-mount devices, MPCC, SW .85 etc.
Chris
What about this flattener?
http://www.teleskop-express.de/shop/product_info.php/language/en/info/p2646_Universelle-Bildfeldebnung-fuer-Refraktoren-von-f-5-bis-f-9---2-5.html