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New Supernova in Messier 101


PaulB

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Hello Michael,

Nope, only when they are new. Next day nothing, no option

to edit.

Too bad, when I originally post, I'm half asleep and make

mistakes typing or adding attachment photos I'd like to change

at will.

I only get to edit during my initial posting, as I'm doing now.

Thanks for your reply,

Bill

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Michael, since it's dropped below 11 have not seen it in my 4" - would probably need perfect conditions and a good altitude! But I am surprised it's still as 'bright' as it is? I thought according to projections that it would be much fainter by now - a nice bonus for you!

andrew

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Michael, since it's dropped below 11 have not seen it in my 4" - would probably need perfect conditions and a good altitude! But I am surprised it's still as 'bright' as it is? I thought according to projections that it would be much fainter by now - a nice bonus for you!

andrew

I just went out now the skies are darker, and using the Nagler 17mm at 120x confirmed it. The mag 11.45 is definitely brighter, the 11.75 definitely fainter. Others put it at 11.4 one or two days ago, so 11.6 is not improbable. Still a good deal brighter than I expected.

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I have just checked the AAVSO light curve found here. This seems to be in line with what I saw. It looks like the SN is turning redder right now, so it should be easier to spot at low altitude than some of the neighbouring stars, because red is scattered less. I wont be able to check it out today, but tomorrow seems promising.

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Michael,

I'm releived at your estimates. I thought I was misjudging at

11.4 on 10/8/11.

Haven't had decent weather since to make a check.

As I said before there have been estimates of 11.8 which I just

couldn't see. 11.6 around your time of observation makes more sense.

Bill

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Here is a magnitude comparison chart about 33' wide showing a healthy SN 2011fe. Image taken 10/8/11 @ 2048hrs in bright moonlight, 48

second single unprocessed image. ISO1600, Antares 152mm refractor, afocal through a 40mmEP, Canon T1i, 50mm lens.

SN estimated mag=11.4. M101 core is at center.

Bill

img0394magconfirm2011fe.jpg

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Sometimes my methods are too basic for my own good. If I don't

make my observational ways complicated enough, I may ruin my

(non) reputation, and will not receive any feedback!

Thanks for yours, Michael!

Bill

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I'd like to think 2011fe will still entertain us when Ursa Major

flips into the morning sky. I would be happy if even it could be

picked up with, if not visually in the eyepiece, still with my

DSLR. This is a challenge to be looked forward to: trophy images

to take home from the early stages at magnitude 9.9 to say, 13 to 14!

Astronomical history caught from the backyard!

Bill

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Michael, are your reference stars in my magnitude comparison photo above? I know this may be a tough ID.

You can't go by the magnitudes labled in my photo as I've found different programs have different mag lables at least in

the tenths and hundreds (main mag is usually in agreement). Always true to my equipment, I trust mine the most, as

I'm sure you trust yours. The field in the image is a little over a half degree as stated.

Refractor orientation.

Nevertheless, your 11.8 seems likely to be spot on! Congrats on your clear-enough sky!

When my sky clears, I'm sure to be looking at quite a different scene, compared to the last image obtained on 10/8.

Thanks for the report.

Bill

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Got out a bit late last night (10/17) and the SN was sitting

less than 12 degrees off the horizon. I had great difficulty

locating it, which is a vote for GOTO in this case.

The light pollution situation was terrible and the view in the EP

seemed to be boiling.

Here is, unfortunately, the best I could do under the circumstances.

Sad, but good enough for a magnitude estimate. I'm giving it 11.8.

Bill

Sn 2011fe is the lower left star of the triangle of brighter stars in this image.

M101's core is the fuzz at the 11:00 o'clock position from the SN.

Image unprocessed for realism:)

Afocal, Canon T1i, 53s, single frame.

Antares 152mm.

img0422oct17sn2011fe.jpg

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Michael, I agree with you on 12.2 magnitude.

I was able to get the field shot below on 10/21. For the

first time the SN looked slightly dimmer than the other two

stars in "the triangle"!

Seeing was very poor, as usual, on my NW horizon.

Bill

snmagcheck00306oct21.jpg

jpgmagconfirmimage0394.jpg

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