6 replies to this topic

[Dave Mitsky]

The GRS will transit Jupiter's central meridian at 10:15 p.m. EST.

 

Universal Times of Red Spot transits centered on date:

02/20/2025 @ 03:15 UT

02/20/2025 @ 13:10 UT

02/20/2025 @ 23:06 UT

Corresponding local dates & times of Red Spot transits:

02/19/2025 @ 10:15 pm

02/20/2025 @ 08:10 am

02/20/2025 @ 06:06 pm

Note: Local times are based on the time zone offset of from UT given by your Web browser. Hour(s): -5

https://skyandtelesc...great-red-spot/

Edited by Dave Mitsky, 19 February 2025 - 10:03 PM.

[Dave Mitsky]

Despite the cold, I set up my 6" f/7.9 Apertura AD6 Dob in my front yard to observe the transit.  However, the seeing was not very good and I was never able to see the not-so-great Great Red Spot.  I used magnifications of 150 (8mm Tele Vue Delos), 171 (7mm Pentax XW), and 200x (6mm Tele Vue Delos). I also employed a Baader Moon & Skyglow filter and later a Wratten #80A blue filter but neither filter revealed the GRS.

[12BH7]

Thanks, I accidentally caught it a few nights ago while testing a new diagonal. Always a surprise.

 

I am shocked at how faded it's become.

[quilty]

yes, sometimes I just don't see it though right there.

[Dave Mitsky]

Here's a screen shot from Stellarium showing the position of the GRS at 10:15 p.m. EST.

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[Dave Mitsky]

Io and Europa were close together at that time.

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[Dave Mitsky]

Here's a Seestar S50 image that I captured around the time of the GRS transit.

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