ASA 2" 0.73x Keller Corrector

[MrB]

I really don't like my chances :lol: but, it doesn't hurt to try....

If anyone has one of these that they aren't using much, or don't use at all and wants to be a really cool and froody guy, I'm looking to buy! :D

Cheers,
Simon

[clive milne]

http://www.astromart.com/classifieds/details.asp?classified_id=807511

[MrB]

Cheers Clive.
I'm not an Astromart member, read too many stories, so can't see any details but might try registering.

Cheers again.

[clive milne]

Here's the details:

For Sale: Boren-Simon .73 Reducer / Corrector

Ad No.: 807511
Seller: Ralph Ford (30)
Price: $950.00
S & H: Buyer pays shipping
Payment: PayPal, Money Orders, Cash
Posted: 1/14/2013 11:56 AM
Location: Redondo Beach, CA - United States
Ad Hits: 349

Similar to the ASA .73 reducer / corrector, which sells for about $1050. An F/4 Newtonian becomes F/2.8. Requires 65mm of back focus, which with my Canon XSi required 11mm of spacer rings which I will include. You would have to provide the proper T-ring for your camera. Great results with only 10 minutes of exposure. Photos on request.

regards,
~c

[MrB]

Oh, thanks heaps for that!
I have received a PM for a possible source for an unused one, also overseas and roughly the same price, but if that lead goes cold I will then follow this one, many thanks again.

I am however still interested in finding one locally(Aus/NZ) if anyone is willing to sell.
Cheers
Simon

[clive milne]

fwiw) You can buy one new from APM for around $1k shipped.
The prices listed include 19% VAT (which you don't pay)

[Tandum]

Simon, make sure this will do what you need it to. It only has a 20mm corrected image circle.
Sounds a bit small for the 27mm diagonal on a 60Da?

[clive milne]

The 3" version might better suit your requirements... it will probably cost you close to $1400 landed though.

[MrB]

Thanks, I did quickly look at APM but thought they might not send here as ASA supposedly has an Aussie dealer :shrug:





Cheers guys.
It is something I had thought long about, and had decided to go with the compromise. The ASA datasheet shows that the FOV can be extended a little by de-focusing the centre. Yeah, not ideal.
I have been looking at images taken with the Boren-Simon PowerNewts which use the same corrector and they're not too shabby, so thought I would take the gamble.
There is also the possibility of going with an 8300 chipped mono cam in future so... :shrug:

The 3" is, as Clive points out, is ~$400 more, plus I would have to upgrade my focuser, another $400 at least. Besides, maybe I'm reading it wrong but the spot diagrams for the 2" look slightly better?

[clive milne]

Simon, also consider that if your CCD is larger than your corrected field, you will actually be better off using a 1x corrector and then binning for sensitivity.

[MrB]

Thanks everyone.
Ordered one OS.