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ASTRO: Nova Vulpecula 2007 revisited Repost
I got two email from folks who saw Stefan's comments on this post but
didn't get the post. I was going to refer them to Replayer but that didn't pick it up either. See it is missing all of Joel Warren's planetary images. It seems to be slipping. So here's a repost in hopes this reaches their server. Some nova fade slowly, some rapidly. This appears to be a slow nova. Some stay blue as they fade but those that throw out hydrogen turn red as they fade. It appears this is a slow, hydrogen rich nova. I've tried to match my August 10 shot to the one I grabbed last night just before the clouds cut me off. Seeing was much better which has had an effect on the star colors and size. Not to mention that I used 2 minute subs for this shot and only 1 minute ones for the August shot. So they aren't as comparable as I'd like. I discovered my error just as the clouds rolled in so couldn't retake it to match. The far better seeing also made a difference. Still the change from blue to red is quite evident. It has faded from Mag 9.4 to 10.1. Only a 0.6 drop in nearly a month. The Mira variable SS Vulpecula to the upper right faded as well from 9.4 (same as the nova) to 9.7. I'va also attached the DSS plates showing the star in its pre nova days in first red then blue light. Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
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