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Old 17-03-2013, 06:46 PM
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Chris85 (Chris)
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FF for ED80

Hi all,

Now I know it's been done to death, but I was wondering if I could get an opionion on a sutiable field flattener for my f-6 ED80 and Canon 600D. I've had quite enough of cropping the outer 50% of my images!
A few I've come across so far are ...

Orion FF http://www.bintel.com.au/Astrophotog...oductview.aspx $149 Bintel

HOTECH SCA Field Flattener http://www.optcorp.com/ht-sca-fft58-...flattener.html $160 (on special) Optcorp

P-FLAT88 NEW 2" Field flattener for Megrez 88 - $179 Andrews

2" Field flattener Astro Tech https://www.astronomics.com/astro-te...rs_p17393.aspx $150 Astronomics

I'm leaning towards the Hutech, but only because it's on special. I also plan on upgrading my scope in the future, so being able to transfer to the new one will be a bonus.

Anyhoo let me know what you all think or any other options I should consider!

Chris
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Old 18-03-2013, 12:44 PM
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whzzz28 (Nathan)
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I use the Hutech on my ED80 (f6) and it works great.

Example: http://core-au.net/astro/Collection/...NO%20SHARP.jpg
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Old 18-03-2013, 03:26 PM
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I have a no-name branded version of the Orion FF sourced from the UK for approx $100. This FF is available under about 4 or 5 different brands.
It works but the corners of an 18mpix APS-c sized sensor still show some coma on an SV70ED f6 scope. It may not be as apparent on a lower resolution sensor, yet to try it with the 10mpix 40D.
This might be corrected with some tweaking of the spacing, not sure tho as I haven't tried.
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Old 18-03-2013, 08:56 PM
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Chris85 (Chris)
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Thanks for the comments.

Cracking image there, Nathan! Definitely looks good all the way to the edge.

Simon have you got any example pics taken with your set-up? And do you have a link to where you purchased your ff?
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Old 18-03-2013, 09:09 PM
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MrB (Simon)
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Chris,

Will see what I can do regarding an image.

I failed to mention that the approx. aussie $100 price(may have been $110 or something, can't remember) was including postage.
I bought it from FLO, however they are currently out of stock: http://www.firstlightoptics.com/redu...flattener.html
Keep in mind the price shown at the above link includes 19% VAT which is exempt for us. Making it approx $80 without postage.
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Old 18-03-2013, 10:00 PM
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Chris85 (Chris)
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Ahh awesome thanks for the link, I've got myself on the mailing list for when they're back in stock

Cheers for the help guys, appreciate it!
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Old 19-03-2013, 02:01 AM
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ourkind (Carlos)
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I used an Orion Field Flattener bought from Bintel with a Canon 60d and an SW-ED80, haven't used any other to tell you which is best. Image taken here http://www.flickr.com/photos/7096042...in/photostream

This is a shot of the scope with the FF attached http://www.flickr.com/photos/7096042...in/photostream
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Old 19-03-2013, 09:54 AM
LewisM
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HOTECH ROCKS! Fantastic bit of kit. I think Agena sells them cheaper - well, they did when I got mine anyway.
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Old 19-03-2013, 10:36 AM
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Sky-Watcher do a FF for the ED80. Exact same optics as Orion. (Same factory, different stickers.)

http://ca.skywatcher.com/_english/03...il.php?sid=180


They also sell a FR for the ED80-120 range. These are also sold Orion badged. (Again, same factory.)

http://ca.skywatcher.com/_english/03...il.php?sid=182
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Old 19-03-2013, 02:11 PM
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Chris85 (Chris)
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Cheers for the input fellas. Will probably go the hutech, simply because they're on special :-P
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