Jump to content

stargazine_ep44_banner.thumb.jpg.6153c4d39ed5a64b7d8af2d3d6061f61.jpg

Recommended Posts

Had a good night last night:

M101 Pinwheel Galaxy and M66 Leo Triplet

Both 20 x 180s Light, 20 Flats, PHD2 guiding using Altair GP-CAM, Nikon D3200 prime focus

I didn't notice the cover wasn't fully on so the darks were spoiled, so will have to do them again once the temp is down to -1C tonight. This will help the re-processing to reduce the noise and there are hot pixels in there. But I'm happy with the light frames.

56dc1ed1576b6_PinwheelGalaxy-05-03-16.th

56dc1eb0df5b8_LeoTriplet-05-03-16.thumb.

  • Like 10
Link to post
Share on other sites

Thanks Chris, I need to add the darks so I can stretch the contrast a bit more. There is more data in there, but getting it out without the darks introduces too much noise.

I also need to invest in a light pollution filter as these were a little orange when I started.

This is an example of one light frame:

56dd66753357e_M101RAW.thumb.jpg.aff45655

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By SuburbanMak
      After a day of mixed weather skies looked very clear Thursday 11/3 so headed out around 9pm to take advantage of a moonless night.
      Walking in straight from bright lights seeing & transparency were looking good - double cluster & beehive were naked eye visible with direct vision and some Messier dustiness in Auriga with an averted view.  I had a vague plan to have a proper go at the Leo Triplet & had spent a bit of time on stellarium to plan how to star-hop in via Chertan & L73.  First though I North aligned SynScan on Sirius and Mars (the top 2 suggestions thrown up by the app) & slewed to the the Pleiades to check alignment, which was good. Couldn't resist having a look at the double cluster from there which was so crisp and deep, then via M34 also looking good, to M42 (of course). 
      The Orion nebula was the best I've seen it yet, looking directly at the Trapezium I could see 5 stars & real cloudy swirls above and below, panning upward there was a hint of dust in the running man area, couldn't discern the running man shape, but haven't seen this much before. Moving on up, Sigma Orionis was such a perfect little system & I toyed with the idea of binning galaxy hunting altogether and going after some close Doubles - Sirius even looked quite steady. I resisted as dark adaption was by now starting to work, before leaving the area though I had a quick go at finding M79, a low-down globular in Lepus most of which constellation was just about visible merging into the LP above the centre of town to the South.  I keyed it into the GoTo & was surprised by a short slew to the E.  Looking in the eyepiece I saw...something, very faint, grey glow around two dim fuzzy stars with a hint of  dark lane between, not the expected Globular - checking again it turned out that I had entered M78 by mistake but there it was, a bonus nebula - not visually spectacular but nice to find & fascinating to look-up later.  I made a quick sketch to confirm and tried for M79, but no, far too low by now. 
      I figured night vision was by now good enough to have a crack at the Leo Triplet and took a GoTo to Regulus & centred. I had manually added Chertan and 73 Leonis to the app and duly centred them to get the best possible local alignment.   Putting L73 in the top L of the field I should be able to pick up M66 bottom right. I couldn't be sure so moved in a pattern around & picked up a fuzz patch. Small adjustments gave me a field with two luminous patches to L & R with a star at the top, I couldn't work this out and they were faint enough to be on the borders of imagination. Everything passed behind a bank of thin cloud for a few moments and I used the time to sketch (incredibly roughly) what I had seen so far.  As the cloud cleared away it weirdly helped confirm that the two luminous patches were absolutely real & I gave them a bit more concentrated attention with averted vision. As I did so a third area top R of field made itself vaguely apparent. My expectation management on galaxies is now starting to get a bit more realistic so I let this one sit for a while and added its general position to my sketch. Still baffled by the field related to what I was sure was L73 I made as good a sketch as I could of both the EP & finder fields for later confirmation ( struggling with glasses on/off, red headtorch & not wanting to fire up the bright phone app as magnitude was so marginal).
      I took a last long look and resolved to figure it out with the atlas & app back home. I later realised that what I had done is, after panning around, manage to confuse the star L73 with a fainter close by star (HD98388-apparently) and had absolutely been looking at all three galaxies in the Leo Triplet - the sketch, although crude, gave me no doubt that I had landed in the right spot this time, just the satisfaction was deferred until I was back inside - something I am fast learning goes with the territory of galaxy hunting with a small scope!
      36 Million light years though, a new personal space-travel record
      I moved on to other Leo Messier galaxies & took a quick look at M95 & M96 which I found relatively easily, a dim pair of headlights but no detail, then wandered across to Makarian's chain and marvelled at the sheer number of little fuzzy signatures that wouldn't resolve to points. Concentration was waning a bit by this stage so I decided to save trying to identify precisely what I was seeing to another night when I could be out later and see them higher out of the murk. 
      I finished with the Mak back on M81 & 2 which looked bright by comparison and gave hints of some spiral & shading detail on this night of exceptional transparency - amazing crisp view with them both in the widest field the Mak can deliver (just over 1 degree with a 24mm Baader Hyperion fixed, 63x). 
      As I packed up the scope the naked eye panorama was just fab and seemed after so much dim fuzzy concentration, incredibly bright. I finished with a 15 minute tour of open clusters with a pair of 10x50s that was really stunning. So many stars in the double cluster, the Alpha Perseii , Pleiades, Hyades & Orion's belt just gorgeous  whilst the Beehive lived up to its name like  a swarm of fireflies.  
      Starting to enjoy galaxy hunting for its own sake but for sheer beauty the binoculars had it tonight. A great couple of hours that left my mind in time & space for a long while after I got back. 
      M78: 

       
      Leo Triplet: 
       

       
       
       
       
       
       
       
       
       
       
    • By VilleM
      I shot luminance for this trio of galaxies in December and after two clear nights in January I managed to get RGB as well.
      Larger image can be found in my blog: https://www.evenfall.space/post/galactic-waltz

      Gear:
      SkyWatcher Esprit 100mm f/5.5
      ASI1600MM-C
      EQ6 guided with ASI224MC
      TS Optics LRGB filters. L: 196x120s, R: 60x120s, G: 72x120s, B: 60x120s. Total integration time approx. 13 hours.

    • By KevinPSJ
      M65, M66 and NGC 3628 - The Leo Triplet. Photographed on May 14. Skywatcher 150P with a Nikon D3200 at prime focus. EQ3-2 mount with RA motor drive (no guiding). 
      19 subs at ISO 800 - 30s each. Aligned and stacked in Deep Sky Stacker to give resulting 4min 30s exposure. Processed in Startools to crop, bin, stretch and colour balance.
      This was my second time around to process this image - starting to get the hang of Startools now.
       
    • By Amajed
      Hi, this is my first time using my new Esprit 100ED, my first time processing using Pixinsight, and it's my first image using a Mono + filters.
       
      I loved them, can't wait to try on more targets.
       
      here's the result:

       
       
      Equipments:
      SkyWatcher Esprit 100ED
      SkyWatcher EQ6-R
      SkyWatcher EvoGuide 50ED Guidescope
      Imaging cam ZWO ASI1600MM Cool Pro
      ZWO EFW
      ZWO LRGB+NB 36mm filters
      Guiding cam ZWO ASI290MM Mini
       
      Seeing was avarage
      Location was in a Green Zone
       
      Exposures:
      Ha 11x1800sec
      L 39x300sec
      R 13x300sec
      G 15x300sec
      B 15x300sec
      Darks:
      24x300sec
      10x1800sec
      Bias:
      70
       
       
      Thanks
    • By DMouse
      Hi, here is last nights shot at M101. This is a luminance run only and was to test to see if the central Halo was still there, and it is, grrrr. I have a sneaky suspicion it is coming from the edge of the secondary mirror. I have pretty much painted everything else matt black, so far. Anyway, Here is the Luminance run.
      Subs: 10x 300sec, 5x 420sec
      Processed in Pixinsight. BIAS, DARKS and FLATS applied.
      Cheers
      Paul

×
×
  • 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.