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June 14, 2026
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HomeJosef Chlachula

Josef Chlachula

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@josef

Active 3 days, 7 hours ago
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  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 2 years, 3 months ago

    Starlink 1176 was launched on January 29, 2020 from Air Force Eastern Test Range, Cape Canaveral FL

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 2 years, 3 months ago

    If you know time of the image(s) set that time at https://stellarium-web.org/skysource/Bode'sGalaxy?fov=4.7939&date=2024-02-29T02:10:34Z&lat=44.08&lng=-92.51&elev=0 and you may see that satellite passing by.

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 2 years, 3 months ago

    Most likely I was able to see 8 mag comet 12P/Pons-Brooks by 10×50 binocular from light polluted backyard.
    See at stellarium-web.org .

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 2 years, 4 months ago

    Very nice GIF image comparing images M101 with supernova about 250 days(8 months 5 days) apart!

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 2 years, 9 months ago

    This morning at about 4:45 AM I was able to see comet C/2023 P1 Nishimura from Root River Park by binocular 10×50. Comet was left from M44. See Stellarium.

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years ago

    Great picture of the supernova 2023ixf! Looking at stars around like at Stellarium-web  supernova could be brighter than 12 mag. According to https://www.rochesterastronomy.org/sn2023/sn2023ixf.html it could be around 11 mag.
    See also AAVSO chart and labeled stars or brightness reports.

  • Profile picture of Josef Chlachula

    Josef Chlachula posted a new activity comment 3 years ago

    Well, there will be tonight 5/20 visible 22 Starlinks G6-30 from 22:34 for about 4 minutes at SouthWest entering Earth shadow inside constellation Leo. Magnitudes only 2.8 and I guess they will be spread 5 times more than yesterday.

    ISS is passing above Cassiopeia at ~22:02 and again at ~23:39 ending in shadow in Cepheus.

    I will fiddle with my…[Read more]

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  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 1 month ago

    There is just now Kp 7.67 – storm, higher probability to see aurora, see https://www.swpc.noaa.gov/news/update-g4-storm-observed-sunday-april-23-2023

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 2 months ago

    Great picture of the M81 and M82 with 80 mm (3.14 inch) aperture with total 16 minutes exposure. Thanks!

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 2 months ago

    I see Northern light even from my backyard, no color though. It could be stronger about midnight see https://services.swpc.noaa.gov/images/aurora-forecast-northern-hemisphere.jpg

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 4 months ago

    Great Trapezium area exposures animation! Basically we can see nebula isophots on each grooving exposure. Thanks for sharing.

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 6 months ago

    Jim, I asked ChatGPT at https://chat.openai.com/chat  “Explain why is ecliptic so high now in Winter” and here is answer:

    The ecliptic is the plane in which the Earth and other planets in our solar system orbit around the sun. The tilt of the Earth’s axis causes the seasons, including winter, and determines the angle at which the ecliptic…[Read more]

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 6 months ago

    Well, it is very simple. Mars is in Taurus, an zodiacal constellation, not so far from bright Aldebaran. Ecliptic in this area has high positive declination. Actually, Mars is not too far from ecliptic. Mars has today ecliptical latitude  2°20′, not much.

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    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 6 months ago

    And Mars is gone behind Moon. It was  awesome!

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Astronomers around the World in the forum General Discussion 3 years, 6 months ago

    Astronaut Scott Kelly wrote on November 24, 2022 https://twitter.com/StationCDRKelly/status/1595925959081070592

    Ukraine from space yesterday. The dark area above the Black Sea. Among many other things today I’m thankful I have electricity and heat.

    UA

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 7 months ago

    Bob, well done images of the 40 Eridani! Thanks for bringing attention to the White Dwarfs – https://rochesterskies.org/40-eridani-b/

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 7 months ago

    I called yesterday Eagle Bluff general number and left message (at I believe option 6) to switch off parking lights. No answer so far 🙁

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 8 months ago

    Public observing night at Elgin I spent a lot of time observing carbon star V Aql. I set my own user object with J2000 coordinates, but I was puzzled, why 10″ SCT with goto Autostar II is always off.  Day later I found that Autostar most likely is using coordinates RA/Decl for current time with current precession. One can find such coordinates a…[Read more]

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 8 months ago

    Bob, this is great picture of Jupiter! You should use club 10″ SCT more often.

  • Profile picture of Josef Chlachula

    Josef Chlachula replied to the topic Observing tonight? in the forum General Discussion 3 years, 8 months ago

    Great picture, Bob! Yes, the color is much closer to the visual experience. I put update2 at https://rochesterskies.org/carbon-star-v-aql/. I don’t understand “on the 9-6 picture was used“. 6 pictures was stacked? Or 9?

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9:45 pm Public Sky Observing 2026-06/19 @ Watson Soccer field
Public Sky Observing 2026-06/19 @ Watson Soccer field
Jun 19 @ 9:45 pm – 11:45 pm
Public Sky Observing 2026-06/19 @ Watson Soccer field | Rochester | Minnesota | United States
Public Sky Observing of the young Moon – 5.1 days after New Moon, planets Venus bright stars, double stars, and more by telescope with guidance members of the Rochester Astronomy Club. What to expect at Public Sky Observing – click here. Reload this page before you leave for the event. Event can be cancelled in case of cloudy weather or [...]
9:45 pm Public Sky Observing 2026-06/19 @ Watson Soccer field
Public Sky Observing 2026-06/19 @ Watson Soccer field
Jun 19 @ 9:45 pm – 11:45 pm
Public Sky Observing 2026-06/19 @ Watson Soccer field | Rochester | Minnesota | United States
Public Sky Observing of the young Moon – 5.1 days after New Moon, planets Venus bright stars, double stars, and more by telescope with guidance members of the Rochester Astronomy Club. What to expect at Public Sky Observing – click here. Reload this page before you leave for the event. Event can be cancelled in case of cloudy weather or [...]
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Public Sun Observing 2026 06/27 @ Soldiers fields
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Public Observing of the Sun through a telescope with guidance from members of the Rochester Astronomy Club. Reload this page before you leave for the event. Event can be cancelled in case of cloudy weather or another reason. Warning: Never look directly at the Sun without proper eye protection, as it can cause permanent eye damage. This includes not looking [...]
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