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pjsmith_6198

Comet 41P/Tuttle-Giacobini-Kresak brightening

47 posts in this topic

It's so diffuse and large - full moon scale, binoculars could well provide the best views especially as it's brightening. I could not see it in binoculars this evening, but could see it in the telescope before M97 and M108 appeared in view.

 

andrew

 

andrew

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Managed to capture comet 41p last night with friends m108 surfboard and m97 owl nebula.

Very noisy image and my processing has left a few black rings on some stars. DSS is playing odd ball and was not showing the individual frames light enough for me to mark the comet to be able to do a proper comet stack, argh...

Virtuoso mount with Canon 1100d vintage 135mm f3 with an 8 inch extended flocked lens tube, ISO 800, 30s and 19 lights 8 flats 29 bias raw files, elevation was 83% when I finished but with the gutter taking over I had to do a heavy crop anyway. I did have more lights but I wasn't waving my seat cushion in quite the right way to block the pesky street light ruining the frame. DSS, StarTools crop and 50% bin with other fiddles and final red bias adjust in PaintShopPro

comet 41p v2.png

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Good views of these 3 with my 12" dob this evening. Needed the 31mm Nagler to get all 3 in the same FoV though.

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Noce picture.

Got my 120ED out last night, when the comet was much close to M108, actually the upper side of M108 in your picture. 50x-80x works well for seeing both M108 and the comet:wink:

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I managed to get all 3 last night, not the prettiest processing but I'm happy. 40x20 sec ISO 3200, 20x dark, 20 x bias. DSS and PS express. Skywatcher 150p eq3-2 canon 1100d. 

IMG_2138.JPG

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Good one Peter:thumbsup:, that's prety much what I saw, left-right mirrored through my diagonal though.:wink:

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Just managed to spot it in the 15x70 bins. Will set up the C8 shortly and see what looks in the big scope

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14 minutes ago, michael.h.f.wilkinson said:

Just managed to spot it in the 15x70 bins. Will set up the C8 shortly and see what looks in the big scope

Had a look using 10"SCT and it's a fuzzy blob :grin:

Dave

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Wlel spotted Dave.

Did you manage to capture it on your camera Tuesday?

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Just now, happy-kat said:

Wlel spotted Dave.

Did you manage to capture it on your camera Tuesday?

Got enough pics for an animated Gif but not done anything with them, moves really fast in the SCT.

Dave

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Got it in the C8, visually. Big smudge, even at low magnification (65x with the Nagler 31T5). Definitely caught my sixteenth comet. Spotted M51, and the Leo Triplet as well. Now I am waiting for Jupiter to rise above the trees. May do some imaging if conditions are good

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10 hours ago, Peco4321 said:

I managed to get all 3 last night, not the prettiest processing but I'm happy. 40x20 sec ISO 3200, 20x dark, 20 x bias. DSS and PS express. Skywatcher 150p eq3-2 canon 1100d. 

IMG_2138.JPG

Nice picture. It's always good when a comet passes close to  DSOs. Wish had got to see the 3 together.

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Finally got around to looking at this comet with the big dob. Not the easiest comet to spot that's for sure. Very diffuse!

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Posted (edited)

Looked again also and not much change. Came across this amazing image from Spaceweather this morning from 22 march, which gives an indication of it size - Comet eats M108 !

 

andrew

Yasushi-Aoshima-C41P20170322UT1325_1490429034_lg.jpg

Edited by andrew63
photo
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When you're looking for this comet in an 8" scope and you eventually see it, it will come as a surprise. It's so faint and diffuse that it's a cheek to call it a comet or even a fuzzy object! I spent an hour looking for it on Friday night without success. I was observing away from home in the Vale of Glamorgan and didn't have Stellarium with me. I had marked the point where it should be on my pocket sky atlas but couldn't find it. Knowing what I know now it was probably in the field of view at some point. Last night then up in the Brecon Beacons I took my computer with me and was able to focus on the exact spot where it was said to be according to Stellarium. Thankfully, in this case, there was a gust of wind to shake the scope as wiggling the scope back and fore at 40x magnification was the only was to see that there was a faint patch of fuzzy light there. Quite large. Someone else at the viewing site took a photo of the comet and it was a really nice blue object. One for the imagers rather than the visual astronomers to admire I think, although I am pleased to have seen the comet especially after the protracted hunt.

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Had both my 10x50's and 20x80 binos out tonight looking for the comet but to no avail. I'll try again, next time looking for a diffuse patch rather than the fuzzy nucleus I was thinking to look for.:bino2:

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I caught this one quite nicely on the second night at DIYPSP. No luck on the first night as the transparency wasn't there, but Goto took me straight to it last night. Visible in both the Tak (with 24mm) and more obvious in the C925. Not spectacular, but good to have seen still. 

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Likewise at the DIYPSP. It must be brightening as it was direct vision in my 70mm finder. This one needs a bigger scope to see the off center brightening towards the core.

Also, if using a package such as Stelarium, make sure that it has downloaded the latest updates. Otherwise you maybe be looking in the wrong place.

Paul

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Although it can to be seen under good conditions with say 10x50s, with a bit of a struggle and more comfortably in 15x70s, I was amazed to see a report of it being 'seen' naked eye last night.  Perhaps one for your sharp eyed children !

 

andrew

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We had this and V/12 Johnson in Hercules at DIYPSP. This was extra faint, but worth catching,

Nick.

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Posted (edited)

Last night, I was able to spot 41/P with 7x50 widefield bins and the 8" f/4 Hofheim traveldob. NELM 5.7 mag, SQM-L 21,13. Large and very diffuse object, the coma diameter about almost 30 arc min with the bins (averted vision), appeared smaller (about 20 arc min) at V=33x with the dob. Almost round, DC about 3; brightness about 7,5 mag (very difficult to estimate due to the large area of the coma).  No tail detectable. Looked somewhat like the M33 galaxy.

Comet C/2015 V2 Johnson looked  more comet-like with about 9.0 mag, coma diameter of about 8 arc min, DC 4-5.

Nice to compare them both.

Stephan

 

Edited by Nyctimene
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On 27/03/2017 at 08:55, andrew63 said:

I was amazed to see a report of it being 'seen' naked eye last night.

!!  who, where,  in The Namib or Cerro Tollolo !?  :)

 

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