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Thread: Fornax, Eridanus and Caelum (2-6-19)

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    Default Fornax, Eridanus and Caelum (2-6-19)



    Crisp, clear sky tonight so I got my Meade 127 NT back out shortly after nightfall for some asterisms in Fornax (2), Eridanus (2) and Caelum (3). All of these are found in the Interstellarum Deep Sky Atlas (IDSA) on charts 85-86.

    1. HD 12835 (For, Ast, size=40 x 17’, RA=2h 5m 35s, DEC=-28° 18' 42", IDSA #86) – IDSA shows 5 stars from mag. 7.6 to 9.8. Using 51x, managed to pick up 4 additional stars down to mag. 10.5 before the asterism disappeared from view. It consists of a semi-circle pattern of stars with a “handle” on top (inverted view). Worth revisiting for a better look, but need to catch it immediately after dusk.

    2. HD 23394 or Alessi J0343.5-2924 (For, Ast, size=16 x 8’, RA=3h 43m 34s, DEC=-29° 24' 38", IDSA #86) – Plotted in IDSA but shows no stars. Using 113x, was able to see 7 stars of nearly uniform magnitude (10.3 to 10.75); zig-zag pattern.

    3. HD 29665 (Eri, Ast, size=28 x 15’, RA=4h 38m 34s, DEC=-30° 59' 24", IDSA #85) – IDSA only shows the mag. 9.8 namesake. Using 113x, managed to pick out 7 additional stars – one having mag. 10.5, and the rest ranging from mag. 11.0 to 11.6. After consulting with C2A, realized I missed the northern part of the cluster; needs to be revisited. Faint; impossible to see (with my scope and skies) if the entire asterism was framed within the FOV at lower magnification.

    4. HD 27950 (Eri, Ast, size=41’, RA=4h 22m 51s, DEC=-32° 2' 24", IDSA #85) – IDSA shows 4 stars from mag. 6.8 to 9.9. Using 51x, picked up 6 additional stars from mag. 9.9 to 10.6. Would have seen more stars with higher magnification, but wanted to keep the entire asterism within the FOV and not dig any deeper.

      After finishing with these four, in IDSA I noticed a tiny constellation called Caelum sandwiched between Eridanus and Columba. Pleasantly surprised to see some asterisms plotted here that I hadn’t logged before, so I got to work immediately before they disappeared from view.

    5. HD 31445 or Streicher 79 (Cae, Ast, size=15.5 x 1’, RA=4h 54m 42s, DEC=-28° 54' 54", IDSA #85) – Plotted in IDSA showing mag. 8.6 star HD 31445. At 113x, 5 other stars ranging from mag. 10.2 to 11.7 form a N/S line with the anchor star.

    6. HD 32515 or Streicher 19 (Cae, Ast, size=41’, RA=5h 1m 12s, DEC=-31° 32' 36", IDSA #85) – Plotted in IDSA showing 7 stars from mag. 6.6. to 10.1. At 51x, added only 3 stars to this large group, incl. a faint mag. 11.6 member that caught the corner of my eye. Because of its size, worth another look higher above the horizon.

    7. HD 31142 or Streicher 17 (Cae, Ast, size=17 x 2.5’, RA=4h 51m 15s, DEC=-34° 14' 0", IDSA #85) – Plotted in IDSA showing 5 stars from mag. 6.5 to 10.3. Using 113x, was only able to add one more member at mag. 10.9, but C2A shows very few stars beyond this. A narrow E/W trending asterism with the brightest stars at each end.


    Once I was done with the Caelum stars, it was time to stop. I was pleased how clear the southern horizon was (at least the non-obstructed part of it) from my urban location.

    It looks like my Meade 5" F/8 Newtonian will get a lot of usage this year - a half-inch or 13mm step-up in aperture compared to the 4.5" Newts I've used as my workhorse scopes since 2013.
    Terry
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Excellent Terry, glad you had some good conditions there. Also happy to see the 5 inch beginning to do its thing and will see some more action. I have all but two of those, one being the dimmer one in Fornax (Alessi J0343.5-2924), the one I didn't get to the other night, plus HD 29665 in Eridanus, which is on my to-do list.

    I have all the asterisms in Caelum from the DSH list, plus one galaxy (NGC 1679) which I got back home at the dark site with the 12 inch.
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Wonderful Terry! Sounds like a good evening out there and glad that you are getting more use of the 5" Newt, nice views of the southern horizon as well.
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Well done Terry! I am glad you are capitalizing on clear weather we having now. I was admiring the sky quality returning yesterday night from work.
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    You have caught rather a few faint star-members of these clusters. Well done and good work for the 5 inch Newton.
    Thanks for your nice report!
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Much better, Terry! Congrats on a successful night!
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Quote Originally Posted by KT4HX View Post
    Excellent Terry, glad you had some good conditions there. Also happy to see the 5 inch beginning to do its thing and will see some more action. I have all but two of those, one being the dimmer one in Fornax (Alessi J0343.5-2924), the one I didn't get to the other night, plus HD 29665 in Eridanus, which is on my to-do list.

    I have all the asterisms in Caelum from the DSH list, plus one galaxy (NGC 1679) which I got back home at the dark site with the 12 inch.
    Thanks Alan, last night was a good session. The two you mentioned were the toughest ones, especially HD 29665. I'll see if I can complete the Caelum asterisms from the DSH list.

    Quote Originally Posted by helicon64 View Post
    Wonderful Terry! Sounds like a good evening out there and glad that you are getting more use of the 5" Newt, nice views of the southern horizon as well.
    Thanks Michael. Don't have a good window on the southern horizon (lot of telephone wires), but I do the best I can.

    Quote Originally Posted by Bigzmey View Post
    Well done Terry! I am glad you are capitalizing on clear weather we having now. I was admiring the sky quality returning yesterday night from work.
    Thanks Andrey! Yes, the sky is pretty good so far - would like to get some more observing in before the moon glow gets too heavy.

    Quote Originally Posted by John Baars View Post
    You have caught rather a few faint star-members of these clusters. Well done and good work for the 5 inch Newton.
    Thanks for your nice report!
    Thanks John, you're welcome! Yeah, surprised at how many faint stars I was able to pick up last night.

    Quote Originally Posted by bladekeeper View Post
    Much better, Terry! Congrats on a successful night!
    Thanks Bryan!
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Hi Terry. A very nice report from you here. I am glad that you had a nice sky to work with, and you certainly had a productive observing session with the asterisms. It seems that you and your 5" Newtonian get along well together. Thanks for your well written and fun read report Terry, and the best of wishes for having another successful opportunity like this again soon.
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    Default Re: Fornax, Eridanus and Caelum (2-6-19)

    Quote Originally Posted by Makuser View Post
    Hi Terry. A very nice report from you here. I am glad that you had a nice sky to work with, and you certainly had a productive observing session with the asterisms. It seems that you and your 5" Newtonian get along well together. Thanks for your well written and fun read report Terry, and the best of wishes for having another successful opportunity like this again soon.
    Thanks Marshall, you're welcome!

    The 5" is time-consuming to set up and much heavier than the 4.5", especially the EQ mount. But that extra half-inch of aperture could make the difference between seeing and not seeing a faint asterism or cluster.
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