Approve the Cookies
This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and our Privacy Policy.
OK
Index  •   • New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Guest
New posts  •   • RTAT  •   • 'Best of'  •   • Gallery  •   • Gear  •   • Reviews
Register to forums    Log in

 
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 27 Dec 2009 (Sunday) 19:49
Search threadPrev/next
sponsored links
(this ad will go away when you log in as a registered member)

M45 through new LP filter

 
DonR
Senior Member
262 posts
Likes: 4
Joined Dec 2009
Location: Georgia, USA
     
Dec 27, 2009 19:49 |  #1

This shot was made on a recent night with poor sky conditons, and using my new Orion Skyglow Imaging filter with my Canon 350D. The Skyglow Imaging filter gives a nearly neutral sky background with an unmodified DSLR.

Thin clouds destroyed about half of my shots of this object on that night. What was left were 21 three minute exposures at ISO 800, none of which were free of interference from the thin clouds. I was pleased to be able to get this image out of what I thought was going to be a wasted night.

The telescope I used was an 8" f/4.9 newtonian reflector at 1000mm focal length. The odd multiple diffraction spikes were due to tree branches impinging on the last four frames - normally I would have tossed those frames out, but decided to keep them this time due to the interesting effect.

Don


HOSTED PHOTO
please log in to view hosted photos in full size.




  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)
Catanonia
Senior Member
968 posts
Joined Sep 2008
Location: UK
     
Dec 27, 2009 20:23 |  #2

Great image there and love the difraction spikes.

Well done :)


MY NEW WEBSITE : www.portrait-universe.com (external link)

  
  LOG IN TO REPLY
vinyleater
Member
107 posts
Joined Mar 2009
     
Dec 27, 2009 21:47 as a reply to  @ Catanonia's post |  #3

Beautiful shot. I love the color.




  
  LOG IN TO REPLY
DonR
THREAD ­ STARTER
Senior Member
262 posts
Likes: 4
Joined Dec 2009
Location: Georgia, USA
     
Dec 27, 2009 21:50 |  #4

Thanks, folks.




  
  LOG IN TO REPLY
Celestron
Cream of the Crop
8,618 posts
Gallery: 1 photo
Likes: 396
Joined Jun 2007
Location: Texas USA
     
Dec 28, 2009 11:24 |  #5

Looks really good . Colors are looking really good .




  
  LOG IN TO REPLY
Adrena1in
Goldmember
1,703 posts
Joined Aug 2007
Location: Winchester, Hampshire, UK.
     
Dec 29, 2009 01:51 |  #6

Very nice, would love to give M45 a proper go one day. As for the diffraction spikes, what a great idea...put a tree in the way!! :)


Canon EOS 450D, Sigma 18-200mm, Canon 50mm f/2.5 Macro, 2x TC, Revelation 12" f/5 Dobsonian, Mintron PD2285-EX webcam.

  
  LOG IN TO REPLY
nubu
Member
Avatar
122 posts
Joined Oct 2007
     
Dec 29, 2009 04:31 |  #7

You will be even more happy when using your filter on emission nebulae like m42. m45 is a reflection nebula and therefore shows a broad spectrum (that of the illuminating stars). Emission line nebulae show only narrow lines of Hydrogen or Oxygen which are passed preferably by light pollution filters. Moreover the contrast of the stars to the nebulae is improved which is not the case for reflection nebulae... Clear skies nubu


5DII/III,7D,m
EF14/2.8LII|EF24/1.4LI​I|EF35/1.4L|S35/1.4A|EF40/2.8|S50/1.4A|MPE6​5/2.8|EF85/1.2L|EF100/​2.8LIS|EF135/2L|EF300/​2.8LIS|EF500/4LIS|Zeis​s500/8|EF1.4xIII|EF2xI​II|EF8-15/4L|EF24-105/4LIS|EF70-200/2.8LISII

  
  LOG IN TO REPLY
DonR
THREAD ­ STARTER
Senior Member
262 posts
Likes: 4
Joined Dec 2009
Location: Georgia, USA
     
Dec 29, 2009 17:05 |  #8

Actually I did image an emission nebula (M42) on the same night as M45. But the next day Catanonia had posted his outstanding M42 image and mine paled in comparison.

The Orion Skyglow Imaging filter is a broadband filter, similar in bandpass to the Hutech IDAS LPS, and unlike most of the other LP filters out there it passes wavelengths all along the visible spectrum, excluding only those bands where tungsten, sodium and mercury vapor lamps emit most.

I totally agree that LP filters are most advantageous for the emission nebulae and supernova remnants, but this filter does a reasonable job on reflection nebulae as well. WIth my old original Orion Skyglow filter, which has bandpass specs similar to the Astronomik CLS and Lumicon Deep Sky filter, the sky background is blue-green, and it's really hard to pull out any nebulosity in M45 and other reflection nebulae.

Anyway, here's my M42, shot on the same night as my M45 image above, with poor transparency and an intermittent high, thin cloud layer.


HOSTED PHOTO
please log in to view hosted photos in full size.




  
  LOG IN TO REPLY
godzakka
Senior Member
353 posts
Likes: 1
Joined Mar 2007
Location: Jacksonville, FL
     
Dec 29, 2009 21:03 |  #9

Spectacular!

If I was creating images like this, I wouldn't complain, that's for sure.




  
  LOG IN TO REPLY
ejicon
Goldmember
Avatar
1,920 posts
Likes: 6
Joined Dec 2006
Location: Hollywood, California
     
Dec 30, 2009 00:56 |  #10

good stuff as well


5D & 30D| Canon 16-35ii f/2.8 L USM| Canon EF 50mm f/1.4 USM | Canon 70-200mm f/2.8L USM | Canon EF 100 f/ 2.8 Macro USM

  
  LOG IN TO REPLY
nubu
Member
Avatar
122 posts
Joined Oct 2007
     
Dec 30, 2009 11:26 |  #11

... you really should not complain with such a beautifull m42


5DII/III,7D,m
EF14/2.8LII|EF24/1.4LI​I|EF35/1.4L|S35/1.4A|EF40/2.8|S50/1.4A|MPE6​5/2.8|EF85/1.2L|EF100/​2.8LIS|EF135/2L|EF300/​2.8LIS|EF500/4LIS|Zeis​s500/8|EF1.4xIII|EF2xI​II|EF8-15/4L|EF24-105/4LIS|EF70-200/2.8LISII

  
  LOG IN TO REPLY
DonR
THREAD ­ STARTER
Senior Member
262 posts
Likes: 4
Joined Dec 2009
Location: Georgia, USA
     
Dec 30, 2009 12:12 |  #12

Thanks, guys. Sorry if it sounds like I was complaining. I''m hoping to see some good, clear nights soon. On this image with the LP filter I had to keep the exposure times down to about the same length I would use without a filter on a clear dark night, because of the poor transparency. My goal that night was to get some idea of the performance of the new filter on various subjects, and I was very pleased to actually get a couple of decent images out of it.

Don




  
  LOG IN TO REPLY
Adrena1in
Goldmember
1,703 posts
Joined Aug 2007
Location: Winchester, Hampshire, UK.
     
Dec 31, 2009 02:34 |  #13

DonR wrote in post #9285110 (external link)
But the next day Catanonia had posted his outstanding M42 image and mine paled in comparison.

I know what you mean. I often think to myself, "Why bother trying to shoot so-and-so, someone else has already taken a far superior picture of it!". Your M42 is one of the far superior ones in my opinion. But actually it's just about the enjoyment of achieving results, however good, and I hope to get back to that myself again one day.


Canon EOS 450D, Sigma 18-200mm, Canon 50mm f/2.5 Macro, 2x TC, Revelation 12" f/5 Dobsonian, Mintron PD2285-EX webcam.

  
  LOG IN TO REPLY
Redone26
Member
80 posts
Joined Jul 2009
     
Dec 31, 2009 04:44 |  #14

Superb pictures, respect.

Paul




  
  LOG IN TO REPLY
MintMark
Senior Member
Avatar
385 posts
Joined Apr 2009
Location: Hampshire, England
     
Dec 31, 2009 12:14 as a reply to  @ Redone26's post |  #15

I think both those images are excellent... particularly the red M42... it looks like a heart about to take another beat!


Mark

  
  LOG IN TO REPLY
sponsored links
(this ad will go away when you log in as a registered member)

2,846 views & 0 likes for this thread
M45 through new LP filter
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
AAA
x 1600
y 1600

Jump to forum...   •  Rules   •  Index   •  New posts   •  RTAT   •  'Best of'   •  Gallery   •  Gear   •  Reviews   •  Member list   •  Polls   •  Image rules   •  Search   •  Password reset

Not a member yet?
Register to forums
Registered members may log in to forums and access all the features: full search, image upload, follow forums, own gear list and ratings, likes, more forums, private messaging, thread follow, notifications, own gallery, all settings, view hosted photos, own reviews, see more and do more... and all is free. Don't be a stranger - register now and start posting!


COOKIES DISCLAIMER: This website uses cookies to improve your user experience. By using this site, you agree to our use of cookies and to our privacy policy.
Privacy policy and cookie usage info.


POWERED BY AMASS forum software 2.1forum software
version 2.1 /
code and design
by Pekka Saarinen ©
for photography-on-the.net

Latest registered member is mostafavifarzaneh
918 guests, 328 members online
Simultaneous users record so far is 15144, that happened on Nov 22, 2018

Photography-on-the.net Digital Photography Forums is the website for photographers and all who love great photos, camera and post processing techniques, gear talk, discussion and sharing. Professionals, hobbyists, newbies and those who don't even own a camera -- all are welcome regardless of skill, favourite brand, gear, gender or age. Registering and usage is free.