tested the hotech field flattener on NGC5139

[h0ughy]

i fired up the 127ED tonight wit hthe cooled canon 350D - iso 400 and the new hotech field flattener - well i am so glad i bought this. its only an hours worth but there was the full moon. the dog track lights and my own backyard lights on:rofl: couldnt have been darker if i tried:lol::P;)

So do you think i now have the field flattened to the corners now!!!???:screwy:

two sizes to try

[strongmanmike]

Looks like well corrected APO quality to me :thumbsup:

You should install flood lights on the dome mate just to annoy the guys at the dog track :rolleyes:

MIke

[pmrid]

Hi David,
do you have any before-after shots? I have an ED127 also and am unsure whether to go down the same path. I've heard others use an MPCC as a de-facto flattener. ANy thoughts on that vs the Hotech?
Peter

[peter_4059]

Looks flat to me Dave. Is there a part number for the Hotech?

[h0ughy]

here is a shot taken without anything http://www.iceinspace.com.au/forum/attachment_browse.php?a=74439

with a wo 0.8 reducer and this was cropped because of the terrible field curvature http://www.iceinspace.com.au/forum/attachment_browse.php?a=74844

[h0ughy]

i bought it from Mr Massey from myastroshop

[h0ughy]

mmmmm Mike now tit for tat wont work:P

[Jeffkop]

Looks like a pretty flat field to be David. If your happy ... then thats the main thing. The images look great too.

[Moon]

Looks way better.:thumbsup:

[avandonk]

Looks like it works well David. Can you put up a 100% crop just outside the main part of the glob to show the dim blue stars. Flattening an APO triplet is 'different' to flattening an APO doublet.

Are these scopes still available direct?

Bert

[h0ughy]

yes i am happy:D

thanks - you know where this come from and is now at

Bert - i am currently at a trainaing course, but i will do a 1:1 posing later this evening

[h0ughy]

Sorry Bert for got to answer this question. I believe they are, though I have not emailed them to find out. One thing though is that whatever focuser they have you need to ditch it and get a moonlight one (or similar). with the dollar the way it is you could have this landed for around 1200 dollars:shrug:

[h0ughy]

crop from just off centre and of the top left at 100% or 1:1 i took these from the tiff file

[Hagar]

Doesn't look to bad at all David.

[multiweb]

Superb! Glad to see you got it all sorted out. Back to having fun now. :)

[h0ughy]

thanks Doug and Marc. i am looking forward for the next few images i hope to be getting. In all honesty this was also the first time i have shot omega cent, i will be doing it again on a dark night.

[acropolite]

I'm curious as to how well the hotech item will work on an ED80 (F7), the sales info says suitable for refractors from f5 to F8

[h0ughy]

well phil in order for me to really find out i will have to buy another one- for the ed80 as this one will be permanently on the 127ED. I think it will be a hit:thumbsup: