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_celestial_motion.thumb.jpg.a9e9349c45f96ed7928eb32f1baf76ed.jpg

Double Kick Drum

22nd July 2012 - Warming Up For The New Season

Recommended Posts

Clear skies at last!

It's been a while since my last report but hopefully weather armageddon has now past us by and we can get out there doing what we do best.

Due to early morning commitments, this was only a short binocular session but still satisfying none the less.

I started with a quick check on Ursa Minor and yes, all stars were present and correct. The sky had moved substantially since my last session so I took a little time to familiarise myself with some old friends. M27 (the Dumbbell nebula) stood out quite well in Vulpecula, as did M29 and M39 in Cygnus. Overhead, the Milky Way appeared reasonably clear and it was very enjoyable just sweeping through the rich star fields.

To the North-East, Casseopeia was beginning to rise. NGC 663 and M52 were both very obvious in the 15x70s. I couldn't see M32, once I had moved round to Andromeda but M31 filled a substantial part of my field of view. I have only ever seen the Andromeda companions in a scope. I wonder if anyone has managed them with a pair of binoculars.

I then moved round to the Southern skies to test the sky out for future reference. In Scutum, M11 (the Wild Duck cluster) looked very nice but I couldn't find M26. To be fair, I didn't spend long looking.... there was Sagittarius (or at least the Northern half of it) just popping his head over the low-ish tree line.

M22 was impressive, despite it being so low in the sky. Sadly, I wasn't sure if I could make out M28. Anything further South is impossible due to viewing restriction.

M24 was not as clear as I had previously seen it but it is a fine starfield and tolerant of a bit of light thrown up by Medway, which is three miles to the South of me. North in a line from M24, I could find three fuzzies. First was the open cluster M18. I believe this has 20 - 25 members but the binoculars revealed just a very small fuzzy circle. Just North from there was a larger and easier fuzzy area to view. I look forward to getting M17 (the Omega nebula) in my scope sight. Further North again is M16 (the Eagle nebula) though obviously it was just the associated cluster that I could see.

Nice to start the season with three new finds. I look forward to spending a little more time with Sagittarius. It is my favourite constellation.

__________________________________________________ ______

Observing Session: Sunday 22nd July 2012, 23:30 hrs to 00:05 hrs BST

VLM at Zenith: 5.4

New - Revisited - Failed

Edited by Double Kick Drum

Share this post


Link to post
Share on other sites

Looks like you had a busy night :)

I feel sure M32 should be visible using decent bins, but one of the things that caught me out when viewing M31's companions with limited aperture is that they're a lot further out than you expect. All the images show them quite close to M31, but if you only have enough aperture to see the core of M31 that's completely the wrong impression to have.

James

Share this post


Link to post
Share on other sites

"only a short binocular session"? Sounds like a much more committed session than mine!

Thanks for the post, you've given me some thoughts for next time. Unfortunately Sagittarius is a no-go for me, M11 was as low as I can see past trees to the south at the moment :(

Edited by KevUU

Share this post


Link to post
Share on other sites

wey hey, back in buisness eh ! :grin: . for a short session you got through a fair chunk of stuff . ive not seen m22 due to its position. congrats on the new finds. i had a bash at some of the objects in your report, i'll post a brief report later.

clear skies .... :laugh:

Share this post


Link to post
Share on other sites

Hmmm. I have just looked at a photo of M18 and am now less convinced that is what I saw, though I can't think what else it could be.

Strange, because the CdC map backs up what I saw in terms of relative size to M17 and relative position.

Share this post


Link to post
Share on other sites

think you probably did have m18 in your sights. reading notes i saw little more than a smiley face asterism and little else. not as bold as the others in the area.

Share this post


Link to post
Share on other sites

NIce report. I like the colour scheme too. Looking up some of your targets has made me realise that I missed some oppurtunities in the areas I was looking the other night like M27 and M39. That's why these reports are useful to all of us. It made me miss my binoculars which I left in the UK too. I'll be visiting in Bideford in August and can pick them up on the way though. I think it's pretty dark there.

Share this post


Link to post
Share on other sites

Bideford itself is probably lit up like a christmas tree, especially in August. It should be fairly easy to find somewhre fairly dark nearby though.

James

Share this post


Link to post
Share on other sites

Bideford itself is probably lit up like a christmas tree, especially in August. It should be fairly easy to find somewhre fairly dark nearby though.

James

Thanks. It will be Bideford Bay so hopefully not too shabby to the west. Fingers crossed

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 MarsG76
      The Omega Nebula, aka The swan Nebula, M17/NGC6618 imaged in Narrowband and combined in Hubble palette style. The photo was imaged with a astromodded and cooled DSLR through a 8" SCT across multiple networks gets from 28 July - 8 August 2019.
    • By MarsG76
      The Omega Nebula, aka The swan Nebula, M17/NGC6618 imaged in Narrowband hAo3hB as RGB. The photo was imaged with a astromodded and cooled DSLR through a 8" SCT across multiple networks gets from 28 July - 4 August 2019.
    • By MarsG76
      Hello Astronomers,
      Adding my latest image to the comp. This is the Swan (or Omega) nebula imaged during multiple nights between 28 July - 8 August 2019 with my Canon 40D DSLR through my 8" SCT at F10, 2032mm focal length. Imaged in narrowband through Baader SII, HAlpha and OIII filters and combined as SHO (Hubble Palette) colour.
      Total exposure time was 27 hours.
      HAlpha Subs are 10 & 15 minutes long, OIII subs are 15 & 20 minutes and SII subs are all 30 minutes so I had to spend at least 2 whole nights per filter, except in the case of SII which was 3 nights. The amount of time it took to gather the subs wasn't crucial since I have a permanent setup and resuming exposures night to night took about 10 minutes, and I wanted as many subs as possible to keep the noise level to a minimum, and to be honest I could just keep on adding subs for as many nights as M17 was in the sky on moonless nights but I find that more than 40 subs per channel on brighter objects seems to have diminishing returns.
      Gathering more and more subs is made it easy when we're in a drought and there are hardly any clouds in the sky, mostly dry and cloud-free nights lately, which allowed me to have 100% successfully exposed subs.
      All subs are ISO1600 and the active cooling definitely helps with the noise levels, most noticeable with SII when comparing to my SII 1800 second subs captured in the past.
      Clear skies,
      MG

    • By MarsG76
      Hello all,
      Sharing with you my finished image of the Swan nebula imaged through SII, HII and OIII narrowband filter using my modded and cooled Canon 40D. Imagd trough my C8" SCT at 2032mm focal length.
      Total exposure was 27 hours across multiple nights.
      Clear Skies,
      MG
       

    • By MarsG76
      Hello Astronomers,
      This is a work in progress, I'm spending my clear moonless nights capturing narrowband data of M17, at 2032mm focal length through my 8" SCT, using my Cooled and modded 40D.
      I still have SII to capture to complete the project but for now I played with the data I already have.
      As it turns out that both the HAlpha and OIII subs have a considerable amount of blue data in them, separated due to the DSLR being a OSC camera, so I used the red out of the HAlpha image, green from OIII green channel and added the blue from HAlpha (the Hbeta data) and blue from the OIII stack and used it as the blue channel, resulting in a almost natural color pseudo RGB image, attached.
      Once I have the SII data, I'll assemble the channels into a SHO narrowband image of M17.
      Clear skies,
      MG
       
       

×
×
  • Create New...

Important Information

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