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Hello all, During the processing of my last image I fount a faint object - looks like a faint cloud of gas. I tried to identify it in the registers (used Aladdin lite) but was unable to find a reference. Can you please help me identify it.  Thank you in advance! CS, Ivan |
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In what constellation are you looking at?
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Would that be at 8:52:46 +9:11:10? Do yoy have an Oiii only image? No CSPN in PanSTARSS DR1 Nothing registered in HASH. |
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Sven Eklund: Yes, that are the coordinates of the object. I imaged with a color camera so here are the separate channels. G and B should show OIII signal.  Thank you for the help. CS, Ivan |
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What is the total exposure time and at what f-number?
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It would be worthwhile to collect some OIII data on the object. There is a "hot-enough" GALEX object nearby.  |
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Sven Eklund: I am imaging with RASA8 at F2. Exposure time is 17 hours. |
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Ivan Raichev:Sven Eklund: Ohh, then you have plenty of photons! Still, I concur with Randy, try to get some Oiii data. |
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Here is the GALEX UV color panel on that object with the cross hairs moved slightly off the object to see that it has a visible flux signal in the GALEX UV bands. The actual UV magnitudes collected by GALEX indicate a flux source right at the 18,000-20,000 degrees Kelvin threshhold where it is just hot enough to ionize any nearby nebulosity.  |
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Thank you for your support. I will collect more data the first chance I get.
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Excellent attention to the details in your image! Will look forward to your results.
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Ivan Raichev: I am in Ha right now (Hyperstar 14") but the techs in Spain will change filter to Oiii late next week. I might be able to help you out then, given CS. |
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Sven Eklund:Ivan Raichev: This would be great. Thank you! |
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Randy Lindstrom: Randy, may I ask where or how you can determine the temperature? Is it simply that stars with lower temperatures just wont be picked up by GALEX UV and since it is visible here it has to be that hot? /Sven |
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Ivan Raichev:Sven Eklund:Ivan Raichev: Ivan, I just had a look at my Oiii data (5h, f/1.9, 4nm Baader Ultrahighspeed filter) and I cannot see any signal in that area. /Sven |
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Thank you for your effort Sven. Then its a processing artifact of some sort. Sorry to waste your time  CS, Ivan |
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Ivan Raichev: Maybe. Or maybe you need more exposure time than 5h. |
