http://cdsportal.u-strasbg.fr/?target=LEDA%20%20907088
https://simbad.u-strasbg.fr/simbad/sim-coo?Coord=66.0060d-15.7438d&CooFrame=ICRS&CooEpoch=2000&CooEqui=2000&Radius=2&Radius.unit=arcmin&submit=submit+query&CoordList=
What are those straight lines (streaks).
Hi,
Those links aren’t working for me, what were you looking at?
Somewhere in this neighborhood?
https://www.legacysurvey.org/viewer/?ra=66.0058&dec=-15.7429&layer=ls-dr9&zoom=15
cheers,
dustin
I’m looking around LEDA 906088. I see wonderful nebulas there. Elsewhere there are streaks or bright lines. I think they are artifact from the observatory or object streaking overhead during exposure.
Hi,
This forum is dedicated to things related to the DESI and the Legacy Surveys. You have posted a link to the CDS Portal and SIMBAD so there is very little information about these “lines” here. Also this link you’ve posted above
With this in mind, can you please send me an image or a LS viewer link to one of these “lines” and be specific? Either Dustin or I can investigate.
Cheers
Oh, that will be an internal reflection from within the telescope.
Hi.
On Windows, you can press "Windows Key + Shift + S and take a portion of the image and it saves it to the clipboard, then paste in the comment section.
For macOS, hit Command + Shift + 5 and take a portion of the image, then hit the screenshot taken at the bottom right, then right-click and select "Copy: then paste it in your reply.
What Tom said, the image you’ve provided is an internal reflection of the telescope’s equipment caused by the bright star. They are common in the DSS survey.
Thank you. I thought that’s what it was. But there a lot of these. i get that some 'lines" I see are mentioned elsewhere as “cosmic ray lines, etc” I will try to include links from Legacy Survey instead of “Sinbad” (Where I see a lot of details) links. There are some “lines” that are odd and not cosmic or artifacts from the telescope.
Not sure if this is accurate but these lines are probably readout streaks from the camera sensor being overwhelmed by light.
These could be satellite trails, but not 100% sure. Certainly artifacts though.
The orange ‘star’ is definitely an artifact I think, but not sure on what it could be. It isn’t visible in the blue filter or in any telescopic survey.
which survey is this? and what RA,Dec?
Its the Digitalized Sky Survey.
We could just make a thread of interesting artifacts
