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.thumb.jpg.5b348d6a5e7f27bdcb79e9356b7fc03b.jpg

Recommended Posts

Did anyone try observing the predicted occultation of a faint star by the asteroid Massalia on 17th Nov 2017 at around 01.30 am? I saw a prediction and tried to observe it, but was defeated by my telescope misting up after a long spell in the open, despite a dew shield.

Share this post


Link to post
Share on other sites

If the conditions were good I would have tried for this, although my location near to London was not expected to see a positive event. I noticed it was mentioned in Astronomy Now November issue page 71. To be honest, with it being just a mag 0.2 drop it would not have been very obvious  and a bit underwhelming. I have not seen any results come forward for this either from the UK or across Europe. Funnily enough I managed a positive result on Sunday November 19th at 5:36 am involving the asteroid (18) Melpomene. This was a mag 0.7 drop which was just discernible on the laptop monitor. I was recording the event with a Watec video camera. There is a good web page for asteroidal predictions based on the target star being brighter than mag 9 which is updated monthly. See here. Both the Massalia and Melpomene events are featured.  Edit:- The prediction page does state brighter than mag 9 but I have just noticed that it goes fainter, however it is still a good reference for a summary of what is coming up. 

Edited by Phil Fargaze
added more information.

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 codeman
      NGC6559 at the center of the milkyway is a photo I created from RGB filters only and at BIN1.

      Telescope: ASA 12'' F3.6
      Mount: DDM 85 Unguided
      Camera: FLI 16200 Mono
      Filters: Astrodon
       
      Thanks for watching
      Haim Huli
       
      My Flickr Page: https://www.flickr.com/photos/101543943@N04/
    • By MikeODay
      Back in March I was granted an observatory code ( Q69 ) by the Minor Planet Center ( MPC ) and since then I have been spending all my available telescope time ( which due the weather has admittedly not been very much  ) to capturing images of asteroids, that the MPC is interested in recieving data for, and sending in the positions that I have determined.
      Mostly I have been focused on asteroids that have not been observed/reported on during their current return to visibility.
      2014 LA21 was my first after getting my code ...



      Here I was the first to report astrometry for 2014 LA21 since 2016 - not like discovering a new comet I imagine but still, a small achievement and  a nice feeling
      You may have noticed that I don't as yet supply any brightness data; this is because I have not figured out how I can do this reliably ( most of the asteroids I am chasing are very dim and so my 4 minute exposures tend to spread them a little making them hard to compare to nearby stars ).
      I have been getting reasonably good position data though, with a "variation to average path" across the samples of sub 1 arcsec ( typically less than 0.5 and sometimes down as low 0.15 )
      ....
      Anyway, I was just thought I would let people know what I have been up to and why you have not seem me latley over on deep sky imaging forum and also, I was wondering if there is anyone else here on Stargazerslounge doing the same thing ...
       
    • By Beckiii__
      I took these two photos only seconds apart. The top bit I took secondly. I’m not sure what it is I’ve captured. But can anyone tell me what it could be??

    • By jimao22
      Last night (Sunday to Monday), a rare event happens. A dim star (mag 10) was occultated by the trans-neptunian asteroid - Huya. The strip where this event was visible passed near by my observatory. So 2:53 local time I was outside to take pictures of this event. It was a very nice night, with clear sky and good temerature for this time of the year. My data obtained by me is already to the profesional astronomers in La Palma, where they will obtain new information about this remote celestial body. I was not alone in this enterprise - another 10 astronomers around the country being involved in the project. I used my data to make a short film of the event with the most important part - occultation itself.

       
      The strip where this event was visible:

    • By MikeODay
      The Great Barred Spiral Galaxy (  NGC 1365 ) in the Constellation Fornax

      ……………………….
      ( edit - star chart added )

       
      The Great Barred Spiral Galaxy ( NGC 1365 ) - Chart   ( please click/tap on image see larger and sharper version )
      A full size ( 6200 x 4407px ) image can be downloaded from here.
      ……………………….
      Details:
      Below the equator, not seen from much of the Northern hemisphere, NGC 1365 passes very nearly directly overhead an observer situated near Cape Town, as Sir John Herschel was in November of 1837 when he discovered this “remarkable nebula” that is numbered 2552 in his book of observations from the Cape.
      Not called a “nebula” now, of course, this striking object is one of the nearest and most studied examples of a barred spiral ( SB ) galaxy that also has an active galactic nuclei resulting in its designation as a Seyfert galaxy.
      At around 60 M light years from Earth, NGC 1365 is still seen to occupy a relatively large area ( 12 by 6 arc minutes ) due to its great size; at some 200,000 light years or so across, NGC 1365 is nearly twice as wide as the Milky Way and considerably wider than both the Sculptor and Andromeda galaxies.
      This High Dynamic Range ( HDR ) image is built up from multiple exposures ranging from 4 to 240 seconds with the aim of capturing the faint detail in the spiral arms of the galaxy whilst also retaining colour in the brightest star ( the orange-red 7th magnitude giant, HD 22425 ).  Also, scattered throughout the image, and somewhat more difficult to see, are numerous and far more distant galaxies.
      .................
      Identification:
      The Great Barred Spiral Galaxy
      New General Catalogue -  NGC 1365
      General Catalogue -  GC 731
      John Herschel ( Cape of Good Hope ) # 2552 - Nov 28, 29 1837
      Principal Galaxy Catlogue - PCG 13179
      ESO 358-17
      IRAS 03317-3618
      RA (2000.0) 3h 33m 37.2 s
      DEC (2000.0) -36 deg 8' 36.5"
      10th magnitude Seyfert-type galaxy in the Fornaux cluster of galaxies
      200 Kly diameter
      60 Mly distance
      ..................
      Capture Details:
      Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ).
      Corrector: ASA 2" Coma Corrector Quattro 1.175x.
      Effective Focal Length / Aperture : 1375mm f4.7
      Mount: Skywatcher EQ8
      Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 
      Camera:
      Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels)
      Location:
      Blue Mountains, Australia 
      Moderate light pollution ( pale green zone on darksitefinder.com map )
      Capture ( 3, 7 & 8 Dec 2018 )
      7 sets of sub-images with exposure duration for each set doubling ( 4s to 240s ) all at unity gain ( ISO 250).
      140 x 240s + 10 each @ 4s to 120s
      total around 9.7 hrs 
      Processing ( Pixinsight )
      Calibration: master bias, master flat , master dark
      Integration in 7 sets
      HDR combination 
      Links:
      500px.com/MikeODay
      photo.net/photos/MikeODay
      <a href="http://www.flickr.com/photos/mike-oday">www.flickr.com/photos/mike-oday</a>
      Image Plate Solution
      ===================================
      Resolution ........ 0.586 arcsec/px ( full size image )
      Rotation .......... -0.003 deg  ( North is up )
      Field of view ..... 58' 37" x 38' 55"
      Image center ...... RA: 03 33 36  Dec: -36 08 27
      ===================================
       
       
×
×
  • Create New...

Important Information

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