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@uisobservatory

This account does not express the opinions of the U of Illinois. It is the home of UIS Friday Night Star Parties β­οΈπŸŽ‰ and other outreach and research by Prof Martin. Go.uis.edu/starparties

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Latest posts by UIS Observatory @uisobservatory

A map of the evening sky in March 2026 noting the stars and constellations Harry Potter characters are named after.

A map of the evening sky in March 2026 noting the stars and constellations Harry Potter characters are named after.

Last night I was at the Chatham Public library talking to a bunch of enthusiastic kids about how to find stars and constellations in the sky that Harry Potter characters are named after.
We had a fun wide ranging discussion about a lot of different astronomy topics.

06.03.2026 17:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I spent a lovely hour this evening at the Chatham Public library, talking with a group of enthusiastic young people about their interest in astronomy.

06.03.2026 01:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Start parties table set up at Tri-City elementary science night

Start parties table set up at Tri-City elementary science night

Start party host, John Martin Tri-City elementary science night

Start party host, John Martin Tri-City elementary science night

We will be at Tri-City Elementary Science Night this evening for 6-7:30 pm giving out Star Party posters and talking about the Artemis 2 Moon mission.

04.03.2026 23:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Total Lunar Eclipse on March 2–3, 2026 – Where and When to See Total lunar eclipse on March 2–3, 2026: Where and when is the Blood Moon visible and what will it look like? Visibility map, animation, and local times.

There is a total lunar eclipse tonight but between it being visible in Illinois from 3-6 am -and- the solidly cloudy weather, we have decided not to over-hype it for Central Illinois

www.timeanddate.com/eclipse/luna...

02.03.2026 19:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The Orion nebula image through the 14 inch telescope with a very short exposure at UIS star party on February 27

The Orion nebula image through the 14 inch telescope with a very short exposure at UIS star party on February 27

The Orion Nebula through the 14-inch at Star Party last night.
Not the most super spectacular image of this awesome nebula but closely approximating what the human eye sees through the telescope. This nebula is pretty bright so you can still see a pretty good amount even with pair of binoculars.

28.02.2026 18:46 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Live Feed from Star Party on 2026 February 27 YouTube video by Dr. Martin at the UIS Observatory

It was good to see the 104 ppl who showed up for Star Party β­οΈπŸŽ‰ last night. Great weather and great crowd!
We will do it again on March 27.
Here is a link to the archived live stream from the 14-inch telescope dome:

www.youtube.com/live/b7whDSN...

28.02.2026 16:53 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A whiteboard informing people that the targets for the telescopes tonight at star party are the moon, Jupiter, and Orion Nebula

A whiteboard informing people that the targets for the telescopes tonight at star party are the moon, Jupiter, and Orion Nebula

The waxing gibbous moon in the clear afternoon sky over the UIS campus Observatory on February 27, 2026

The waxing gibbous moon in the clear afternoon sky over the UIS campus Observatory on February 27, 2026

Star party is ON for tonight February 27!
We have skies and nice temperatures.
Doors open at 8 PM and you can show up anytime between 8 and 10 PM to get a look through the telescopes which will be focusing on the moon Jupiter and the Orion nebula tonight.
Info: go.uis.edu/starparties

27.02.2026 22:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Start a party at the UIS campus Observatory on Friday, February 27 from 8 to 10 PM. Weather permitting.

Start a party at the UIS campus Observatory on Friday, February 27 from 8 to 10 PM. Weather permitting.

There’s a star party tonight!!! πŸŽ‰β­οΈπŸŽ‰β­οΈβ­οΈ
Join us at the UIS campus, Observatory between 8 and 10 PM for views of the Moon, Jupiter, and the Orion nebula.
Info at this link go.uis.edu/starparties
People who can’t make it in person can join our YouTube live stream at go.uis.edu/virtualstarp...

27.02.2026 17:02 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thanks for the boost Kisha.
Fair disclosure: Kisha and I exchange Christmas cards every year. 🀣

27.02.2026 16:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
An image of the moon taken with the UIS observatory Widefield camera on the evening of February 26, 2026 CST

An image of the moon taken with the UIS observatory Widefield camera on the evening of February 26, 2026 CST

We snapped this picture of the moon last night while we were using the 20 inch telescope to also take spectra of Epsilon Auriga and Kappa Draconis.

27.02.2026 14:09 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
The moon as imaged by the UIS observatory wide field camera on February 23 CST

The moon as imaged by the UIS observatory wide field camera on February 23 CST

I almost forgot to share this awesome shot of the Moon that we took last Tuesday with the UIS Research Observatory wide field camera.

26.02.2026 00:08 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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The first star party of 2026 is this Friday, February 27 at the UIS Observatory from 8-10 PM weather permitting.
The weather forecast is for clear skies and temperatures in the 50s.
The Orion Nebula,Pleiades star cluster, the moon and the planet Jupiter are up for viewing
go.uis.edu/starparties

25.02.2026 15:46 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This huge nebula is always a subject of discussion when we are imaging M33. Can’t miss it even from a distance of 3 million light years.

25.02.2026 03:25 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Image of epsilon Aurigae by the UIS observatory wide field camera on February 23 CST

Image of epsilon Aurigae by the UIS observatory wide field camera on February 23 CST

Image of Kappa Draconis taken by the UIS observatory wide field camera on February 23 CST

Image of Kappa Draconis taken by the UIS observatory wide field camera on February 23 CST

We use the 20 inch telescope last night to take Spectra of two old friends: Epsilon Aurigae and Kappa Draconis.

24.02.2026 20:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Star party at the UIS campus Observatory on Friday, February 27 from 8 to 10 PM. Weather permitting.

Star party at the UIS campus Observatory on Friday, February 27 from 8 to 10 PM. Weather permitting.

The first Star Party β­οΈπŸŽ‰ of spring 2026 is this Friday, February 27 from 8-10 pm at the campus observatory, weather permitting.
go.uis.edu/starparties

23.02.2026 19:32 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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NASA to Rollback Artemis II Rocket, Spacecraft - NASA Weather pending, NASA will roll the SLS (Space Launch System) rocket and Orion spacecraft for Artemis II off the launch pad at the agency’s Kennedy Space

NASA is now targeting the next launch opportunities for the #ArtemisII lunar mission starting from 1 April.

πŸ”— www.nasa.gov/blogs/missio...

23.02.2026 10:38 πŸ‘ 95 πŸ” 14 πŸ’¬ 4 πŸ“Œ 6
NASA Troubleshooting Artemis II Rocket Upper Stage Issue, Preparing to Roll Back - NASA Editor’s note: NASA has updated an earlier version of this blog to provide additional details.

Artemis 2 might be delayed until April. Will know for certain if they start the rollback to the VAB and/or release the crew from quarantine.

www.nasa.gov/blogs/missio...

21.02.2026 21:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Mercury distorted by differential atmospheric refraction like a sunset near the western horizon on February 20, 2026

Mercury distorted by differential atmospheric refraction like a sunset near the western horizon on February 20, 2026

Saturn πŸͺ imaged through the 14-inch telescope on February 20, 2026

Saturn πŸͺ imaged through the 14-inch telescope on February 20, 2026

The crescent Moon πŸŒ’ image on February 20, 2026

The crescent Moon πŸŒ’ image on February 20, 2026

Mercury, Saturn and the Moon seen through the 14-inch telescope at the Campus Observatory this evening.
Mercury is red and rainbow colored because of the atmospheric refraction near the horizon, like a sunset.

21.02.2026 04:37 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Looking at the Western Horizon at about 6:10 PM CST on February 20, 2026. Mercury visible above the horizon with Venus below it and Saturn above it

Looking at the Western Horizon at about 6:10 PM CST on February 20, 2026. Mercury visible above the horizon with Venus below it and Saturn above it

See Mercury tonight (Feb 20)! The weather in central Illinois may be clear.
Find a place with a flat western horizon. Mercury will be bright and visible once the sky gets dark enough around 6:10 pm.
Venus will be harder to pick out below Mercury. Saturn higher up will become visible as sky darkens

20.02.2026 16:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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NASA declares Boeing’s botched Starliner flight a mishap on-par with deadly space-shuttle disasters NASA leadership on Thursday outlined how 2024’s glitch-plagued Boeing Starliner mission jeopardized astronaut welfare and the space agency’s culture of safety and accountability

NASA leadership on Thursday outlined how 2024’s glitch-plagued Boeing Starliner mission jeopardized astronaut welfare and the space agency’s culture of safety and accountability

19.02.2026 21:24 πŸ‘ 90 πŸ” 23 πŸ’¬ 6 πŸ“Œ 11
The moon and Mercury in the evening sky on February 18, 2026

The moon and Mercury in the evening sky on February 18, 2026

The moon and Mercury in the evening sky on February 18, 2026

The moon and Mercury in the evening sky on February 18, 2026

The moon and Mercury in the evening sky on February 18, 2026

The moon and Mercury in the evening sky on February 18, 2026

Pictures of the conjunction of the Moon πŸŒ™ and Mercury on the evening of February 18, 2026 CST.
The Moon moves on, but Mercury continues be above the setting Sun in the evening sky for the next week.

19.02.2026 13:41 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Mercury next to the crescent moon after sunset on February 18, 2026 with Venus below and Saturn above.

Mercury next to the crescent moon after sunset on February 18, 2026 with Venus below and Saturn above.

Tonight after sunset, the crescent moon πŸŒ’ will appear in the western sky right next to the planet Mercury. Venus and Saturn may also be visible below and above Mercury.
Best time to go out is about 30 minutes after sunset. You’ll need a flat western horizon.

18.02.2026 21:46 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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NASA Eyes Next Wet Dress Rehearsal for Artemis II - NASA NASA is targeting Thursday, Feb. 19, as the tanking day for the second wet dress rehearsal ahead of the agency’s Artemis II test flight.

NASA is targeting 19 February to start the second Wet Dress Rehearsal for the #ArtemisII lunar spaceflight.

17.02.2026 16:32 πŸ‘ 95 πŸ” 16 πŸ’¬ 0 πŸ“Œ 2
Mercury and Saturn visible in the evening sky after sunset on February 15, 2026

Mercury and Saturn visible in the evening sky after sunset on February 15, 2026

Mercury and Saturn visible in the evening sky after sunset on February 15, 2026

Mercury and Saturn visible in the evening sky after sunset on February 15, 2026

Mercury and Saturn were visible after sunset last night. Venus was too low and behind the trees from this vantage point.
Look for these all week long. The crescent Moon πŸŒ™ joins them Tuesday and Wednesday.

youtu.be/cPrMQaFWPP4?...

16.02.2026 13:54 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Venus, Mercury and Saturn visible above the western horizon after sunset this week.

Venus, Mercury and Saturn visible above the western horizon after sunset this week.

Three bright planets visible right after sunset in the western sky this week. Venus is really bright, but will be hard to pick out closest to the horizon. Mercury is above Venus and above that is Saturn.
The Moon πŸŒ™ joins this trio on Tuesday and Wednesday.

15.02.2026 22:35 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

When I was working at the US Naval Observatory, I spent a lot of time in their library while code ran on the main frame. With these spaces disappearing, I lament what we are losing.

13.02.2026 19:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The Fossil Nebula in color composed from images taken by the UIS research observatory 20 inch telescope

The Fossil Nebula in color composed from images taken by the UIS research observatory 20 inch telescope

The Fossil Nebula in black-and-white composed from images taken by the UIS research Observatory 20 inch telescope

The Fossil Nebula in black-and-white composed from images taken by the UIS research Observatory 20 inch telescope

The Fossil Nebula imaged by the UIS research observatory wide field camera

The Fossil Nebula imaged by the UIS research observatory wide field camera

These pictures of the Fossil Nebula are composed from images taken at the UIS Research Observatory on Wednesday night.

13.02.2026 15:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The 2026 Star Party posters are officially released! Free 13x19 copies to good homes that will display them. Contact us if you want one.
Info about upcoming Star Parties this Spring found here:
Go.uis.edu/starparties

11.02.2026 13:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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A very good opportunity to see Mercury is coming up in mid-February 2026.
It reaches greatest elongation on Feb 19, appearing 18 deg from the Sun.
Best viewing is about 30-40 minutes after sunset on Feb 16-22 much brighter Venus will be below Mercury making it easier to pick out in twilight.

10.02.2026 14:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Just two days to the premier of the 2026 UIS star party poster!
Go.uis.edu/starparties

09.02.2026 15:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0