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Title: Mikes cascade may challenge
Post by: Rocket Pooch on May 14, 2008, 22:25:36

Hi,

I did this a few nights ago, 3x4 minute subs unguided with an ED80 and AP.67 focal reducer and CLS filter, down to mag 12.8 I think.

(http://farm3.static.flickr.com/2142/2493378150_29d2e40b45_b.jpg)

Title: Re: Mikes cascade may challenge
Post by: MarkS on May 15, 2008, 07:13:15

Nice one! Very clear.

Title: Re: Mikes cascade may challenge
Post by: JohnP on May 15, 2008, 08:40:18

Nice image Chris however, I think FOV is smaller than you think - I think you have made an error with your labels. I think that what you have labelled as NGC4479 & 4477 are actually 4461 & 4458 & that M88 is actually NGC4473. See image below from SkyMap. The distance between m86 & m88 is greater than 2 degrees whereas m86 to ngc4473 spans about 1 degree.

Cheers, John

(http://homepage.ntlworld.com/john.punnett/graphics/oas/m86area1.jpg)

Title: Re: Mikes cascade may challenge
Post by: Mike on May 15, 2008, 10:40:21

Nice one Chris. Can we see a non-negative version without the labels as well please.

Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Rocket Pooch on May 14, 2008, 22:25:36