Jump to content

Banner.jpg.b83b14cd4142fe10848741bb2a14c66b.jpg

Yes M31 again

harry page

By harry page
in Imaging - Deep Sky

Recommended Posts

harry page

harry page

Posted
Posted

Hi

I managed to get my new second hand tak epsilon 180 going the other night , only to find some nasty old astigmatism -- had I brought a duffer BangHead.gif

First port of call was mirror in main cell and I thought the clamping screws were a bit tight so I backed them of slightly and had another go , and was really pleased to see

no astigmatism occasion14.gificon_biggrin.gif

So M31 was up and took 20 4 min subs with mty sx m25 OSC camera , must get a LPS filter sorted as it was a right old mess to sort out

Not in the olly realms but quite happy for the short time laughing7.gif

Onwards and upwards hopefully

Kind regards Harry

High res version is here http://www.harrysast...l/M31 2012.html

post-4081-0-84295100-1352239727_thumb.jp

Link to comment
Share on other sites
  • Replies 41
  • Created
  • Last Reply
harry page

harry page

Posted
  • Author
Posted

Fantastic deep image for such a short overall exposure time - they are superb, fast scopes. I still have some way to go to get my F2.9 producing stars like that!

Hi

I have a keller corrector and its not easy to get it to cover a aps chip , the tak gives a bigger flat field :evil:

Harry

Link to comment
Share on other sites
Tom OD

Tom OD

Posted
Posted

Great image for 80mins Harry. Just wondering about the star in the top right corner. There is an ellipse type shape around it. Is that a processing thing or a bright star effect with the F/2.9?

Good job on the astigmatism fix.

T.

Link to comment
Share on other sites
ian_bird

ian_bird

Posted
Posted

Wow! 80 Minutes? I was out there for 10 hours getting the wide field for Olly and my M31! I have seriously got to take a look at the Tak Epsilon.

I must admit - I thought you had to go LRGB to get an image like that! Given I live in the UK maybe I should think about OSC. Kind of hard to get enough data in all channels in LRGB.

But I guess the fast speed of the Tak helps too.

Whatever - very nice!

Cheers

Ian

Link to comment
Share on other sites
harry page

harry page

Posted
  • Author
Posted

Wow! 80 Minutes? I was out there for 10 hours getting the wide field for Olly and my M31! I have seriously got to take a look at the Tak Epsilon.

I must admit - I thought you had to go LRGB to get an image like that! Given I live in the UK maybe I should think about OSC. Kind of hard to get enough data in all channels in LRGB.

But I guess the fast speed of the Tak helps too.

Whatever - very nice!

Cheers

Ian

Hi

Yes I put a lot of this down to the old tak at f2.8 :kiss:

Exspensive , but worth it

Harry

Link to comment
Share on other sites
Gina

Gina

Posted
Posted

The weather in this country is quite a good argument for an OSC CCD but my first CCD will be mono as I like to do quite a lot of NB stuff. The DSLR will do for OSC for a long time yet. For that matter it will have to do for NB too for quite a while. It'll take me a long time to save up for a CCD camera.

Link to comment
Share on other sites
laser_jock99

laser_jock99

Posted
Posted

Hi

I have a keller corrector and its not easy to get it to cover a aps chip , the tak gives a bigger flat field :evil:

Harry

The corrected area of the 2" ASA Keller just misses the corners off an APS sized (23mm) CCD unfortunately, as can be seen in some of my uncropped images. The 3" Keller reducer corrector is an eye watering 1000 euros. Still if you want hang a full frame 35mm DSLR CCD off the scope then you'd probable have to go that route. This hobby is a money pit!

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.