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Thread: The Observational Astronomy Thread

  1. #46
    Senior Member KenOC's Avatar
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    This may be of interest to backyard skygazers – the Stellina, an automated astrocamera that works in conjunction with your smartphone. Everything’s automatic: initial orientation, target location, shooting the picture (actually a set of stacked images), and offloading to your phone or the cloud. Not cheap at $4K but looks like fun! Here’s a review with samples.



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  3. #47
    Senior Member Strange Magic's Avatar
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    The latest Sky & Telescope also reviews the Stellina, and found several things also to not like, especially its shortcomings in dealing with the moon and the planets--the reviewer found Stellina's images of Saturn to be no better than what Galileo's primitive telescope showed him. I think most amateur astronomers would rather pocket the $4,000 and spend it instead on something with a larger aperture, though likely less compact. The question will be, how often will Stellina be used by the gadget-loving probable purchaser?

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  5. #48
    Senior Member KenOC's Avatar
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    Here’s a sample image from the Stellina, doubtless a very long exposure with some extensive image-stacking (taken from digitaltrends). Not too sharp, but I suspect Galileo would have been willing to trade some significant body parts for a piece of kit like this.

    Last edited by KenOC; Jan-27-2020 at 03:11.


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  7. #49
    Senior Member KenOC's Avatar
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    Quote Originally Posted by Strange Magic View Post
    ...I think most amateur astronomers would rather pocket the $4,000 and spend it instead on something with a larger aperture, though likely less compact. The question will be, how often will Stellina be used by the gadget-loving probable purchaser?
    This is the view of quite a few DPR readers, who also think a more capable setup can be had for the price. Example: "It’s for people of means with a passing interest in astro but unwilling to put any effort into it. After using it a few times it will end up gathering dust."


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  9. #50
    Senior Member Jacck's Avatar
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    the Spitzer telescope ends its mission
    https://www.skyandtelescope.com/astr...-ends-mission/

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  11. #51
    Senior Member mikeh375's Avatar
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    With hindsight, it seems obvious that cosmic rays from outside our solar system would affect chemical processes in planetary atmospheres.....wow.

    https://www.ibtimes.com/saturn-moon-...sphere-2924051

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  13. #52
    Senior Member Luchesi's Avatar
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    wrong thread oops
    Last edited by Luchesi; Mar-27-2020 at 07:04.
    Tradition is not the worship of ashes - but the preservation of fire!
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  14. #53
    Senior Member Luchesi's Avatar
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    The comet is expected to become much brighter by the time it sweeps by the sun closer than Mercury during late May, it could even rival Venus in the evening sky.


    https://wattsupwiththat.com/2020/04/...ow-next-month/
    Tradition is not the worship of ashes - but the preservation of fire!
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  15. #54
    Senior Member Room2201974's Avatar
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    Beetle juice, again! Now brightening!


    http://www.astronomerstelegram.org/?read=13601
    The more I compose, the more I know that I don't know it all. I think it's a good way to start. If you think you know it all, the work becomes a repetition of what you've already done. ~ A. R. Rahman

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  17. #55
    Senior Member Jacck's Avatar
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    Mile-wide asteroid set to pass within 3.9m miles of Earth
    https://www.theguardian.com/science/...ce-mask-fly-by

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  19. #56
    Senior Member Luchesi's Avatar
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    Quote Originally Posted by Jacck View Post
    Mile-wide asteroid set to pass within 3.9m miles of Earth
    https://www.theguardian.com/science/...ce-mask-fly-by
    If well-hidden aliens nudged this one towards us in order to clear this planet for themselves, they missed..
    Last edited by Luchesi; Apr-29-2020 at 18:20.
    Tradition is not the worship of ashes - but the preservation of fire!
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  20. #57
    Senior Member Phil loves classical's Avatar
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    Was walking home one time from college and saw above the horizon either Comet Hale Bopp or Hyakutake in 1996 without knowing beforehand or reading about it. It was quite a sight, the tail was quite clear.

    I camped out in my car at Glacier National Park in Montana one night, to beat the morning rush for parking at a visitor centre. The stars were twice (or 3x) as bright as I've ever seen even than in my pretty isolated home town in Northern Ontario back in the day. The milky way was unforgettable.

    Now I just look for the occasional meteor shower, usually the Perseids around August.
    Last edited by Phil loves classical; May-08-2020 at 04:57.
    "Forgive me, Majesty. I'm a vulgar man. But I assure you, my music is not.“ Mozart

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  22. #58
    Senior Member Luchesi's Avatar
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    Quote Originally Posted by Phil loves classical View Post
    Was walking home one time from college and saw above the horizon either Comet Hale Bopp or Hyakutake in 1996 without knowing beforehand or reading about it. It was quite a sight, the tail was quite clear.

    I camped out in my car at Glacier National Park in Montana one night, to beat the morning rush for parking at a visitor centre. The stars were twice (or 3x) as bright as I've ever seen even than in my pretty isolated home town in Northern Ontario back in the day. The milky way was unforgettable.

    Now I just look for the occasional meteor shower, usually the Perseids around August.
    From this you can mull over what you might've been looking at in the Galaxy;

    summer view.gif
    Tradition is not the worship of ashes - but the preservation of fire!
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  24. #59
    Senior Member Luchesi's Avatar
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    Quote Originally Posted by KenOC View Post
    Here’s a sample image from the Stellina, doubtless a very long exposure with some extensive image-stacking (taken from digitaltrends). Not too sharp, but I suspect Galileo would have been willing to trade some significant body parts for a piece of kit like this.

    Piece of kit

    New Word Suggestion


    British slang for: New technology

    Submitted By: DavedWachsman - 11/01/2013


    Approval Status: Rejected

    ------------------

    Rejected? Very odd. Too British?
    Tradition is not the worship of ashes - but the preservation of fire!
    Gustav Mahler

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