C/2020 F3 (NEOWISE)

Celestial visitors from the edge of the Solar System.
Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

C/2020 F3 (NEOWISE)

Post by Christopher K. »

Scott Cadwallader acquired the NEOWISE nucleus visually with a binocular just east of the LSU campus. Meanwhile, Judah Santiago nabbed an image of NEOWISE with tail from his home.

HRPO did not open for special viewing of this object because the eastern tree line of neither HRPO grounds nor the Burbank Soccer Complex was low enough. NEOWISE is moving into the evening portion of the sky. In about two weeks an alert may arrive regarding attempted viewing of NEOWISE from Burbank.

More information:
https://skyandtelescope.org/astronomy-n ... s-at-dawn/

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

Make that about three days.

Preliminary research has led HRPO personnel to decide that this Friday evening will probably be the best last time to attempt a viewing of NEOWISE. The current BRAS consensus is that the comet is about magnitude 2.4. The viewing attempt will be at the Burbank Soccer Complex from 9pm to 10:30pm, weather permitting and if all logistics can be worked out. Confirmation will come tomorrow.

Here's a skymap for Friday night...
https://www.spaceweather.com/images2020 ... vening.png
Last edited by Christopher K. on July 17th, 2020, 7:28 pm, edited 1 time in total.

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Attempted NEOWISE Viewing at Burbank on 17 May 2020

Post by Christopher K. »

HRPO personnel will indeed be at Burbank on Friday from 8:30pm to 10:30pm, with the following restrictions for patrons...
*All patrons must wear a mask.
*Patrons are allowed into the Burbank Soccer Complex only for this viewing session. Most of the Complex will not be accessible.
*Patrons are allowed to stay a maximum of fifteen minutes.
*A maximum of thirty patrons are allowed onsite at any one time.

It is strongly recommended that patrons bring both something to drink and a binocular.

Remember, comet viewing is attempted comet viewing. Choose your arrival time carefully. Early in the session, NEOWISE will be higher but twilight will be brighter. Later in the session twilight will be darker but NEOWISE will be lower.

More information:
https://astronomy.com/news/2020/07/neow ... to-gallary
https://astronomy.com/sitefiles/resourc ... C39DADA07}
http://www.aerith.net/comet/catalog/2020F3/2020F3.html
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr= ... og=0;cad=0
https://skyandtelescope.org/astronomy-n ... s-at-dusk/

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Seeing NEOWISE from Private Property

Post by Christopher K. »

People in the local area will not see NEOWISE any higher than twenty degrees altitude--probably no higher than fifteen degrees. There is at least one report of NEOWISE having a five-degree-or-longer tail.

Light pollution make be the game changer here. Anyone who has a low and legally accessible western horizon and is interested in seeing this object may want to perform a quick assessment of that immediate area. Business owners whose light is straying off their property, homeowners associations and the like should be contacted. Can any outside light be shut off safely and temporarily?

The window for spotting this object is very brief. There may be a chance to see a higher, dimmer NEOWISE sometime between the 20th and 22nd.

More information:
https://www.jpl.nasa.gov/spaceimages/de ... d=PIA23792

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

Below is the NOAA forecast for the Burbank viewing time of 8:30pm to 10:30pm...
precipitation potential, 11%
sky cover, 38%
relative humidity, 78%
temperature, 28˚C
heat index, 32˚C
surface wind, SE 3 km/h


Please peruse the previous posts before attending. HRPO can receive phone calls until 7:45pm.

Danko's Clear Dark Sky states that during HRPO's event time the transparency rating will be "average" (3 out of 5) and the seeing rating will be "good" (4 out of 5).

At 9:15pm attempted viewing of the double star Albireo will begin. Twilight ends at 9:41pm CDT. At 9:45pm attempted viewing of Jupiter will begin.

The 17 July 2020 rating is...
EXCELLENT
VERY GOOD
GOOD
FAIR
POOR
BAD
Last edited by Christopher K. on July 20th, 2020, 5:46 pm, edited 1 time in total.

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

HRPO personnel greeted fifty-one patrons for Comet NEOWISE viewing, most of whom actually spied the comet both at 18x in an old-design Astroscan and in a larger instrument at higher magnification.

Unbelievably, NEOWISE was also visible from HRPO grounds due to a low gap in the northeast tree line. Judah Santiago discovered this and he was able to show quite a few patrons during Plus Night.

HRPO's next attempted viewing will be tonight (at HRPO) from 8:45pm to 9:45pm, just before the Saturnian Opposition viewing.

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

Below is the NOAA forecast for the HRPO viewing time of 8:45pm to 9:45pm...
precipitation potential, 1%
sky cover, 56%
relative humidity, 80%
temperature, 28˚C
heat index, 33˚C
surface wind, SE 7 km/h


Please peruse the previous posts before attending. Danko's Clear Dark Sky states that during HRPO's event time the transparency rating will be "poor" (1 out of 5) and the seeing rating will be "average" (3 out of 5).

At 9:45pm attempted viewing of Saturn will begin.

The 20 July 2020 rating is...
EXCELLENT
VERY GOOD
GOOD
FAIR
POOR
BAD

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

Well, the views of NEOWISE last night left something to be desired. Scott reported that if it wasn't the clouds it was the humidity (which did indeed spike to ninety-four percent before the Saturn viewing was finished). However, many in town saw it, and BRAS members got some wonderful shots Saturday night when they went to the members-only dark-sky site.

9 July 2020 APOD (NEOWISE with noctilucent clouds over French Alps):
https://apod.nasa.gov/apod/ap200709.html

pselaphid
Posts: 16
Joined: March 21st, 2017, 3:17 am

Re: C/2020 F3 (NEOWISE)

Post by pselaphid »

Slipped in this shot between clouds at my dark sky site in Mississippi.

https://www.flickr.com/photos/12666884@ ... ed-public/

Christopher K.
Posts: 5482
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: C/2020 F3 (NEOWISE)

Post by Christopher K. »

Yoshida is estimating magnitude 5.7 for NEOWISE at this time (Skyhound says 5.9). The comet is sinking down to the horizion this coming week. Right now the NEOWISE is either embedded in the Coma Berenices Cluster or very close to it.

More information:
http://www.aerith.net/comet/catalog/2020F3/2020F3.html

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