Grant Posted August 17, 2020 Share Posted August 17, 2020 Following the excellent talk last night by Dave @ Pixel Skies showing his process workflow for our M16 data I'm please to announce the first public release of the data Some small print first though: We will be releasing all public data from the Ikarus Observatory project under a Creative Commons Attribution-NonCommercial licence. What this means is you are free to share, copy and redistribute the data as you see fit and adapt, remix, transform and build upon it but you must attribute 'Ikarus Observatory' as the source of the original data and must not use it for commercial purposes - i.e. no sticking images on the side of mugs and selling then Beyond that, enjoy and have fun! You can find out more about the IKO project here including details of the equipment used, observatory site etc.. We've done a few other test runs up to this point and have some more data awaiting release but we are starting with SHO Narrowband M16 data taken a couple of months ago. This started off as 100 hours in total but has been whittled down to select just the best frames - this is partly some learning on my part as I need to adjust the times we finish imaging runs to ensure it's within astro dark and the targets are high enough to get the best data. We've also cut out anything with any cloud passing through, issues caused by moon light, severe satellite trails and the like. This has left: Ha - 46 x 20 mins = 15h20m OIII - 29 x 20 mins = 9h:40m SII - 44 x 20 mins = 14h40m Bias 101x Flats 21x for each filter Darks 21x 20 mins Total integration time = 39h:40m These have been stacked and calibrated in Pixinsight. The raw XISF or FITS files can be downloaded here. Dave has also kindly shared his Pixinsight workspace with notes / icons / masks ready for you to play with, that's available here: iko_m16_20200817.zip but be warned, it's a rather large 3.8GB! Details of the processing competition are here. I hope you enjoy playing with the data and we look forwards to sharing more very soon! 9 2 Link to comment Share on other sites More sharing options...
Grant Posted August 17, 2020 Author Share Posted August 17, 2020 Dave's StarGaZine video is here for you to follow along 🙂 Link to comment Share on other sites More sharing options...
DaveS Posted August 17, 2020 Share Posted August 17, 2020 I must be doing something stupid, as when I click on the .fit links I get a FITS header, followed by what looks like a PI process history, followed by random characters, with nothing looking like something I can download into a folder for processing. Link to comment Share on other sites More sharing options...
Grant Posted August 17, 2020 Author Share Posted August 17, 2020 6 minutes ago, DaveS said: I must be doing something stupid, as when I click on the .fit links I get a FITS header, followed by what looks like a PI process history, followed by random characters, with nothing looking like something I can download into a folder for processing. Try right clicking the fits link and the a save as - sounds like your browser is trying to open it as a txt file rather than downloading it. I will look tomorrow, I should be able to do something to force download the fits files. 1 Link to comment Share on other sites More sharing options...
DaveS Posted August 18, 2020 Share Posted August 18, 2020 Thanks Grant. It did look very much as though it saw the file as txt and downloaded it as such I right clicked and looked for a "save target as" but no luck. Will try your suggestion. Link to comment Share on other sites More sharing options...
Grant Posted August 18, 2020 Author Share Posted August 18, 2020 I've made a tweak on the server which will force your browser to download these rather than try and open them. 1 Link to comment Share on other sites More sharing options...
DaveS Posted August 18, 2020 Share Posted August 18, 2020 OK, thanks. Downloaded now, will have a play in AstroArt and Affinity. Link to comment Share on other sites More sharing options...
daz Posted August 18, 2020 Share Posted August 18, 2020 Grabbing the PI file now Link to comment Share on other sites More sharing options...
andrew s Posted August 18, 2020 Share Posted August 18, 2020 (edited) Grant if your using Voyager to control the rig it's very easy to limit the imaging on astro dark and or object altitude. I do this all the time and it works very reliably. Regards Andrew Edited August 18, 2020 by andrew s Link to comment Share on other sites More sharing options...
Spongey Posted August 18, 2020 Share Posted August 18, 2020 (edited) Is there a specific thread where we can post our renditions of this incredible data? EDIT: Apologies, I've just seen the competition thread link in the original post. Cheers Edited August 18, 2020 by Spongey Link to comment Share on other sites More sharing options...
Grant Posted August 18, 2020 Author Share Posted August 18, 2020 5 hours ago, andrew s said: Grant if your using Voyager to control the rig it's very easy to limit the imaging on astro dark and or object altitude. I do this all the time and it works very reliably. Regards Andrew Hi Andrew - we are still using SGP, we tested Voyager but I didn't like some of the ways it worked vs SGP so have stuck with that. There are similar limits in SGP, you just have to set them (d'oh!). I'm now imaging multiple targets a night to ensure we get the target at it's best / highest. 1 Link to comment Share on other sites More sharing options...
happy-kat Posted August 18, 2020 Share Posted August 18, 2020 The fit files are quite small size wise, downloaded nice and quick Link to comment Share on other sites More sharing options...
StevieO Posted August 19, 2020 Share Posted August 19, 2020 Excellent, I've been looking forward to seeing the data, especially as I have a Stellamira on order from FLO. I use Photoshop for processing and it wouldn't open the FITS files, so I ran each file though Deep Sky Stacker one at a time and 'stacked' it, producing a TIFF file for each filter which can now be processed in PS. I'd be interested to know if there's an easier workaround or if there's any loss of data doing it this way. Cheers StevieO Link to comment Share on other sites More sharing options...
TerryMcK Posted August 19, 2020 Share Posted August 19, 2020 Thanks for making the files available. I will have a bash at them. Thanks to Dave for an informative talk. Link to comment Share on other sites More sharing options...
DaveS Posted August 19, 2020 Share Posted August 19, 2020 1 hour ago, StevieO said: Excellent, I've been looking forward to seeing the data, especially as I have a Stellamira on order from FLO. I use Photoshop for processing and it wouldn't open the FITS files, so I ran each file though Deep Sky Stacker one at a time and 'stacked' it, producing a TIFF file for each filter which can now be processed in PS. I'd be interested to know if there's an easier workaround or if there's any loss of data doing it this way. Cheers StevieO GIMP 10.2.18 will open FITS files directly, and it's free. 1 Link to comment Share on other sites More sharing options...
RayD Posted August 19, 2020 Share Posted August 19, 2020 On 17/08/2020 at 22:27, Grant said: Ha - 46 x 20 mins = 15h20m OIII - 29 x 29 mins = 9h:40m SII - 44 x 20 mins = 14h40m Thanks, Grant. Can I assume the OIII is a typo and should be 20 mins also, otherwise we have no matching dark frames. Thanks for the time and effort put in to providing these data. Link to comment Share on other sites More sharing options...
Grant Posted August 19, 2020 Author Share Posted August 19, 2020 3 minutes ago, RayD said: Thanks, Grant. Can I assume the OIII is a typo and should be 20 mins also, otherwise we have no matching dark frames. Thanks for the time and effort put in to providing these data. Well spotted - typo fixed 1 Link to comment Share on other sites More sharing options...
souls33k3r Posted August 19, 2020 Share Posted August 19, 2020 On 17/08/2020 at 22:44, Grant said: Dave's StarGaZine video is here for you to follow along 🙂 Cheers for the data Grant and it sure was an interesting episode. One thing I would like to say, the quality of the video was for me not good. I always want to bump it up to 1080p but this session did not have that option so all the formulas that Dave was typing (or had already typed) couldn't make sense of it. But it's good that he released the project so I can now check. But just a pointer really. Cheers mate. Link to comment Share on other sites More sharing options...
Grant Posted August 19, 2020 Author Share Posted August 19, 2020 11 minutes ago, souls33k3r said: Cheers for the data Grant and it sure was an interesting episode. One thing I would like to say, the quality of the video was for me not good. I always want to bump it up to 1080p but this session did not have that option so all the formulas that Dave was typing (or had already typed) couldn't make sense of it. But it's good that he released the project so I can now check. But just a pointer really. Cheers mate. That's odd - I just checked and 1080P is an option? Perhaps try on a different device or, it can sometimes take YouTube longer to process the HD version so maybe it wasn't available when you tried? 1 Link to comment Share on other sites More sharing options...
Hughsie Posted August 19, 2020 Share Posted August 19, 2020 Thank you to everyone involved in the project. M 16 is one of my fav targets but I would struggle to capture it from my location. Off to have a play with the data. Cheers John Link to comment Share on other sites More sharing options...
souls33k3r Posted August 19, 2020 Share Posted August 19, 2020 18 minutes ago, Grant said: That's odd - I just checked and 1080P is an option? Perhaps try on a different device or, it can sometimes take YouTube longer to process the HD version so maybe it wasn't available when you tried? Maybe I was just a bit too quick to view the session. Can confirm I can see the 1080p option. Cheers mate. Link to comment Share on other sites More sharing options...
steppenwolf Posted August 19, 2020 Share Posted August 19, 2020 10 hours ago, StevieO said: I'd be interested to know if there's an easier workaround or if there's any loss of data doing it this way. There is a great 'workaround' although I'd call it a great third party 'feature' - FITS Liberator V2.3. There are newer versions BUT this version interfaces directly with PhotoShop as a plug-in allowing you to open (but not save) FITS files directly from within PhotoShop. I never leave home without it! 1 Link to comment Share on other sites More sharing options...
rubecula Posted August 20, 2020 Share Posted August 20, 2020 Has anyone been able to open these files with CCDSharp? On trying to open there was an "problem opening file" response with no explanation as to what the problem was. I used FITS Liberator to convert to TIF and got exactly the same result. This is with the latest download of CCDSharp on a Windows 10 machine. Thanks, Link to comment Share on other sites More sharing options...
carastro Posted August 21, 2020 Share Posted August 21, 2020 (edited) Is there any chance of posting the downloads as Tiffs. I can't use Fits files and I can't use XISF files. I tried opening the Fits files in in both Astroart and Maxim and then resaving them as tiffs but the files are unworkable - i.e. will not stretch just a black image. Just installing Fits liberator, but disappointed I can't get the Tiff files directly after waiting all these months. Carole Edited August 21, 2020 by carastro Link to comment Share on other sites More sharing options...
carastro Posted August 21, 2020 Share Posted August 21, 2020 I have tried Fits liberator, and it has now opened it, but the image is overblown and clipped as soon as I open it. Any-one any ideas? Link to comment Share on other sites More sharing options...
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