Dear Denis,

I will WILL all my images (including FITS files) to the BAA - I'm not joking.  I have good intentions concerning submitting to the BAA archive.  My problem is time.  

Unlike the wonderful images taken by many astroimagers, the image is not my end product.  Photometry is the end product.  [My photometry results go into the ICQ archive.  So far I have not submitted to COBS, which I think is a great archive, but I am sure that will happen at some point.]  
Obtaining the photometry takes quite a bit of extra time.  At the moment I am just trying to keep current 
with the observations, which is difficult.  Adding perhaps an hour per observing day to annotate a few images so they can be sent to an archive is not a priority.  For June, I imaged C/2017 T2 on 10 nights  That would require about 2.5 extra hours in the month to annotate the images.  And there are probably 5 or 6 other comets (out of over 10 comets) imaged in June that would be appropriate to submit.  I rarely put my images on the internet because of this.

Now that I have established a methodology that provides stable comet magnitudes, I have about 1,000 images/observations backlogged dating back to 2018 for photometric analysis.  Do I annotate images or do I work on the backlog?

I appreciate that you would like my images submitted.  I am sure it will happen at some point.

Regards,
Charles

Dreamweaver Observatory
Fillmore, CA USA


On Wednesday, July 8, 2020, 08:14:09 AM PDT, denis buczynski - buczynski8166 at btinternet. com <baa-comet@simplelists.com> wrote:


Hi Charles,
Good news that you could see this comet with you naked eye this morning. It is a very beautiful comet in its present form, both visually and it is very photogenic.Also good to hear that you have been so active over the last couple of weeks imaging comets. Any image that you want to send to us at the BAA will be saved in the Comet Image Archive.


Best wishes

Denis Buczynski



------ Original Message ------
From: "=?us-ascii?q?Charles_S_Morris_-_cometguy3783_at_yahoo.com_ ?=" <baa-comet@simplelists.com>
To: baa-comet@simplelists.com
Sent: Wednesday, 8 Jul, 20 At 13:47
Subject: Re: [BAA Comets] 2020 F3 (NEOWISE)

My observation this morning - The comet appeared in a notch in the hills.

2020 July 8.49 m1=1.4, DC=9, Tail at least 4.5 degrees 10x50 B

I have a high degree of confidence in this estimate. Estimates against two stars (Beta and Theta Aur) produced results within 0.1 magnitude after the differential extinction correction was applied. I also glimpsed the comet with the naked eye.

Charles

Charles Morris
Dreamweaver Observatory
Fillmore, CA USA

On Tuesday, July 7, 2020, 11:21:34 PM PDT, Charles S Morris - cometguy3783 at yahoo. com <baa-comet@simplelists.com> wrote:


Hi Folks,

Here in Southern California, it has been clear the entire month and I have imaged 6-8 comets every night except that of July 4/5 (a US holiday) where there were too many fireworks, many illegal, going off and filling the air with smoke. I often get high humidity in the morning, but most of these days have been dry. And I am forecast to get good weather for the next several days. I am sorry the weather has been problematic. I know the frustration of having weather interfere with observing,

I have seen C/2020 F3 in bright twilight the last two mornings from my home. My results-

2020 July 6.50 UT m1=0.9:, DC-9, 3 deg. tail 10x50 B
2020 July 7.50 UT m1=1.3, DC=9, 3 deg. tail 10x50 B

The 3 degree tail was confirmed independently by Dan Green Tuesday morning. The brightness estimates were corrected for differential extinction. I think the estimates are good to within a few tenths. The drop in brightness was very real. I will be able to get a PA on the tail for the July 7 observation

Now, how bright was the sky background? I was surprised to see the comet as it rose over the hills to the northeast on Monday morning. Those hills are 7 degrees so the background was very bright. My initial thought was, this thing has to be 0 magnitude. But the numbers said otherwise. The tail was obvious, but quite faint. On Tuesday the tail went just up to and to the left of theta Aur (mag 2.6) which was 3 deg. above the comet.

My original plan was to drive to a spot with a better horizon on Tuesday morning, but when I saw the comet on Monday morning, I changed my mind. I hate driving at night these days and the trip is an hour roundtrip. So, I plan to continue to observe in bright twilight. The comet will move into a notch in the hills so my horizon will improve down to 4-5 degrees. This way I will be able to continue my string of 29P observations (Nothing exciting so far). Unfortunately, my NW horizon is 20 deg. so I will have to drive next week at some point.

Several bright comets have been named in reference to C/2020 F3, but so far the correct one has not - Comet Kohoutek. By the time Kohoutek got into a dark sky, it was 3rd magnitude. That is what is going to happen here, I expect. It will be a nice comet, but probably not spectacular.

I am in my observatory imaging. I have to babysit my scope, unfortunately. All this clear weather is wonderful, but I am exhausted. Good thing I am retired.

Clear skies,

Charles Morris
Dreamweaver Observatory
Fillmore Ca, USA

On Tuesday, July 7, 2020, 03:47:00 PM PDT, Nick James <ndj@nickdjames.com> wrote:


Peter,

That shows the bifurcated tail well.

I've stacked 21x5s exposures from this morning and the resulting V-band
synthesised image shows stars to around 9th mag at the same altitude as
the comet (Gaia DR2). Comphot then gives a total magnitude of 2.0. The
detected tail length is around 1.5 deg.

Things should get better for us as the comet moves up into a darker sky.


Nick.


>
> I stacked 14 of yesterday’s desaturated images and it shows well the bifurcated
> tail near the comet’s head.
>

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