Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_dslr_mirrorlesss_winners.thumb.jpg.9deb4a8db27e7485a7bb99d98667c94e.jpg

Recommended Posts

Rosette Nebula ( NGC 2237 ) - by Mike O'Day ( https://500px.com/mikeoday )

My first attempt at processing the subs I took last night.

Not totally happy yet - next time I process it I think I need to boost the red in the mid tones somewhat to try to compensate for the filter in my standard Nikon D5300.

Details:

Rosette Nebula in Monoceros ( NGC 2237, 2238, 2239, 2244, 2246 )

by Mike O'Day ( 500px.com/MikeODay ).

The Rosette Nebula surrounds a cluster of bright young stars (NGC 2244) and is around 5,200 light years from Earth.

Links:

https://500px.com/MikeODay

http://photo.net/photos/MikeODay

This image ~ RA 6h 31m, Dec 5deg 2'.

Skywatcher Quattro 10" f4 Newtonian.

Skywatcher AZ Eq6 GT Mount.

Orion Short Tube 80mm guide scope & auto guider - PHD2.

Baader MPCC Mark 3 Coma Corrector (no filter used).

Nikon D5300 (unmodified).

Field of view (deg) ~ 1.35 x 0.90..71 x 30 sec ISO 800.

Pixinsight & Photoshop.

20 December 2015

  • Like 4

Share this post


Link to post
Share on other sites

You're getting some great results with your unmdded DSLR.. well done, the image looks great.

Share this post


Link to post
Share on other sites

Great image, Mike005! 

I am a Nikon user myself (D3300) and expect once I have got used to my new telescope I will attempt to devise a means to attach it. 
 

Share this post


Link to post
Share on other sites

Thank you guys, much appreciated.

Great image, Mike005! 

I am a Nikon user myself (D3300) and expect once I have got used to my new telescope I will attempt to devise a means to attach it.

You should be able to find a suitable adaptor - I wish you clear skies for your new scope.

Share this post


Link to post
Share on other sites

Great picture! I really like the sharp stars. Maybe you could try longer exposure times to bring out more nebulosity? When I had my first attempt at the Rosette two weeks ago I took 8 min subs with my Canon 60Da at ISO 1600 on my 5" refractor at f/6 without overexposing. That would translate to about the same exposure time with your f/4 scope and ISO 800. Unfortunately the sky was a bit hazy and my stars were not as sharp as yours (could partly also be the longer exposure). Maybe combining the nebulosity from longer exposures with the sharp stars from your 30 s exposures would nail it.

Share this post


Link to post
Share on other sites

By the way, amazing that we can be imaging the same object at about the same date in Australia and Sweden.

Share this post


Link to post
Share on other sites

Very nice image, especially with an unmodded camera.

Cheers, much appreciated.

Share this post


Link to post
Share on other sites

Great picture! I really like the sharp stars. Maybe you could try longer exposure times to bring out more nebulosity? When I had my first attempt at the Rosette two weeks ago I took 8 min subs with my Canon 60Da at ISO 1600 on my 5" refractor at f/6 without overexposing. That would translate to about the same exposure time with your f/4 scope and ISO 800. Unfortunately the sky was a bit hazy and my stars were not as sharp as yours (could partly also be the longer exposure). Maybe combining the nebulosity from longer exposures with the sharp stars from your 30 s exposures would nail it.

Thanks Gorran.

The moon is dominating the sky now for the next 10 days or so but I will try to capture some more subs (some longer ones as well). The problem I have here in the Blue Mountains above Sydney is the relatively high light pollution, made somewhat worse at the moment due to the warm humid nights we have been having. 8 mins would be 4 stops greater exposure of the LP and would put the LP histogram peak way to the right, if not right off the screen. I'll have a go though and see what I get.

Having said that I'm just not sure how much more I can expect from my unmodified DSLR with this particular nebula ...

Cheers

Mike

Share this post


Link to post
Share on other sites

By the way, amazing that we can be imaging the same object at about the same date in Australia and Sweden.

Yes, although all your images are upside down:)

Great colours in your Horsehead and Rosette images, by the way.

Share this post


Link to post
Share on other sites

I was just going to tell you that yours were upside down....

Cheers

Share this post


Link to post
Share on other sites

.... and we both have the same problem with the moon

Share this post


Link to post
Share on other sites

.... and we both have the same problem with the moon

It's a stupid hobby really, isn't it?

It's either raining, cloudy, too windy, the darn neighbors have their lights on or the blumming moon is in the sky.

Oh well, I'm sure it's character building or something ...

  • Like 1

Share this post


Link to post
Share on other sites

It's a stupid hobby really, isn't it?

It's either raining, cloudy, too windy, the darn neighbors have their lights on or the blumming moon is in the sky.

Oh well, I'm sure it's character building or something ...

More like... something... :blob8:

Perhaps Santa will bring us plenty of dark, cloud and moon free nights along with thoughtful neighbours!    :icon_santa:

Share this post


Link to post
Share on other sites

In addition to clouds, moon and neighbors, there are even more things conspiring. Last time, when I finally had a really clear sky and no moon, everything looking fantastic, my autoguiding system decided to waste my precious time by not being able to calibrate, having me trying to find out if it was guiding on hot pixels, if it was out of focus, or if it was not communicating with the mount, or something else. After three hours I gave up and went to bed....

Share this post


Link to post
Share on other sites

In addition to clouds, moon and neighbors, there are even more things conspiring. Last time, when I finally had a really clear sky and no moon, everything looking fantastic, my autoguiding system decided to waste my precious time by not being able to calibrate, having me trying to find out if it was guiding on hot pixels, if it was out of focus, or if it was not communicating with the mount, or something else. After three hours I gave up and went to bed....

Something like that happens to me all the time - usually it turns out to be me doing something stupid because it's been so long since the the last successful session that I've forgotten what I'm supposed to be doing.

The last time the problem was my DEC clutch would not hold. I tightened it up as far as it would go but it was still completely loose. I gave up, posted questions to the forums and received lots of helpful suggestions. Unfortunately, none of these helped. A couple of days later I was playing with the clutch and I found that if I rotated it the other way it miraculously tightened and worked perfectly :)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Clear Skies!
      I am going to buy Skywatcher EQ5 Pro Go-To mount. But, unfortunately, I am low on budget.
      So, does someone know where can I buy the cheapest EQ5 pro mount?
      Yesterday there was a low price for it (350 €), but they changed it.
      Thank you for your time!
    • By codeman
      IC4604 in LRGB Filters. Taking for Namibia during my visit in June 2019. This beautiful nebula is part of the rho Ophiuchi colorful cloud, i the center a 3 blue bright stars the reflect the blue light on the nebula.
      Photo Details:
      Lum - 20 x 5min = 100min
      RGB - 5x5min for each channel at BIN2, 75min
      Total Exposure: 175Min (~3 Hours)
      Telescope: ASA 12'' F3.6
      Mount: DDM 85 Unguided
      Camera: FLI 16200 Mono
      Filters: Astrodon
      Thanks for watching,
      Haim
      My Flicker Page: https://www.flickr.com/photos/101543943@N04/

        

    • By mikemabel
      My first image of M76 A bit rushed as clear nights are a rarity now
      30x120s Bin 2 Luminance ,SW 102 , ZWO 183MM Pro , OVL field flattener ,guided , processed in Gimp
      Took some Ha as well but poor results for some reason
      Seems an Oiii filter may have brought out some more detail
       
      i know its not great but just chuffed to have imaged it
       
       
       
       
       


    • By UKAstroBill
      The weather has been so bad I have had the time to finish a video on using astro filters with the Nikon Z bodies and Nikon camera lenses. There is a manual alternative to the FTZ allowing 1.25 inch filters to be fitted between camera and F-mount lenses, and for some lenses and end of lens solution make sense. FAstroTZ is described here:
       
       
       
    • By Bruno Marin
      I found this setup in internet and make me think, with AZEQ6 GT and 2 scopes, different weights and size, without counterweight in AZ mode! 
      - I can put a MAK100mm 3kg +- and a OO VX10l  12kg +- without counterweight?
       
      Does anyone have this setup mount and already used without counterweight with two telescopes of different weights? Is it really necessary to have a balance using in AZ mode?
      The problem to centralize the object with both scopes is true? With the SW AZEQ6 GT?
      Follow the images
      a TSA-120 with 6.5 kg i think and the other with 22kg i forgot the brand hehe you can help me?
       


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.