#1  
Old 04-02-2024, 04:49 PM
OzEclipse's Avatar
OzEclipse (Joe Cali)
Registered User

OzEclipse is offline
 
Join Date: Jun 2012
Location: Young Hilltops LGA, Australia
Posts: 1,216
Comet 144P Kushida

Had a nice albeit short session last night. Clouds were predicted to arrive 60 mins after astronomical twilight. The weather prediction out here is very accurate. Cloud arrival is usually within 30 mins of the hourly model.

I set up my 6" f7 during twilight. The mount, made mostly from aluminium, is quite robust and weather resistant but has spent a lot of time out in the weather uncovered for the past 2 years so I had stripped it down, replaced the lube and a few rusted steel socket cap machine screws.

The OTA had been inside the cool house all day and didn't need any cool down time. Seeing was pretty good and I was enjoying steady 200x views of Jupiter from the get-go during nautical twilight.

I went inside shut the blinds and turned on the household red lighting. Soon after astronomical twilight hit, I pointed the scope at C/144P Kushida located immediately adjacent to the Hyades.

Sky conditions for that first hour were outstanding. Transparency was excellent with the sky inky black between stars and probably somewhere between Bortle 1 and 2. Sky here varies from Bortle 1-4 depending critically upon particulates (pollen, smoke, dust) in the air. However the earlier excellent seeing rapidly deteriorated from 4/5 to 2/5.

The comet's coma was about 10' diameter, fairly round with a faint indistinct nucleus possibly around Mv 12.5-13.
I didn't try to estimate brightness. Clouds were coming in fast. I could see Jupiter already in a diffuse haze and I doubted I'd have time to complete the estimate. The most recent estimates that have been reported are around Mv 10.2.

I produced the attached digital sketch indoors immediately afterwards. Didn't want to use any light at all at the telescope with the comet so faint.

Looks like I'll have a few days of clouds then a run of clear so, I'll get the 18" out from Wednesday on and get a good look at it.


Joe
Attached Thumbnails
Click for full-size image (144P Kushida 20240203-1030 copy.jpg)
193.8 KB60 views

Last edited by OzEclipse; 04-02-2024 at 11:22 PM.
Reply With Quote
  #2  
Old 05-02-2024, 09:40 PM
EpickCrom (Joe)
Epick Crom

EpickCrom is offline
 
Join Date: Jan 2021
Location: Perth
Posts: 417
Hi Joe, nice visual report! You are a lucky man to have such dark skies from your backyard.

I have attempted to observe comet Kushida several times from my bortle 6 backyard but alas no luck. I will be attempting it again tonight. Great sketch!

Clear Skies
Joe
Reply With Quote
  #3  
Old 06-02-2024, 10:35 AM
Crater101's Avatar
Crater101 (Warren)
Mostly Harmless

Crater101 is offline
 
Join Date: Jul 2020
Location: Bathurst, NSW
Posts: 685
Neat report, I can only envy you an evening of viewing like that.
Nice to have the sketch as well, something I can never get quite right.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 07:38 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement