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Thread: Asteroid questing

  1. #1
    Raymondhow's Avatar
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    Default Asteroid questing



    My quest continues to catch and sketch all of the first 100 asteroids discovered. On Monday night I tracked down two more with my XT8.

    41 Daphne is in Aquarius, about mag 12 which is close to limiting magnitude from my urban rooftop. While sketching the field, I was distracted by a couple of bogies in the form of geosynchonous satellites of about mag 10 or 11. Somewhat fascinating to watch those sit still while the stars run past. I needed 120x to pick up Daphne.

    93 Minerva is in Pisces, predicted about mag 11.7 but seemed somewhat brighter, easily seen with 75x.

    Tuesday night was clouded out, but luckily tonight cleared out again. I caught the 'roids to sketch their B positions. Minerva had nearly twice the sky motion of Daphne, being closer to us and faster.

    Only 13 remaining of the first 100 left to catch. Three of those 13 are coming to opposition this month, will keep me busy soon.

    Thanks for reading, clear skies!
    Attached Images Attached Images
    Ray
    ===
    12.5" f/6 custom Dob by New Moon Telescopes, Orion XT8 f/6 "ruby-red" Dob. Finders 13x80 Stellarvue RACI, 9x50 Orion RACI. Eyepieces 34mm Explore Scientific 68°, 24mm ES 68°, 16mm ES 68°, 10mm TeleVue Delos 72°, 9mm ES 62°, 7mm TeleVue DeLite 62°. Binoculars 12x63 Orion Mini-Giant.

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  3. #2
    bladekeeper's Avatar
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    Default Re: Asteroid questing

    Good catches, Ray!
    Bryan
    Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Meade NG60 f/10
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    Default Re: Asteroid questing

    Nice Ray! I haven't had too much scope time recently. I've had better luck in the early mornings between 5:00 am and 5:45 am when the skies have been clear. Evenings mostly have been foggy.
    Michael
    Obsession 18" f/4.2, Zhumell Z10 f/4.9, ES AR 152 refractor f/6.5, Celestron Skymaster 15x70's , Bushnell 10x50's
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    Default Re: Asteroid questing

    Nice catches Ray! Reminds me it has been awhile since I logged any.
    Scopes: Celestron: 8" SCT F10, Omni 150R Achro F5, Onyx 80ED F6.3; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, UA MicroStar. Binos: Orion 10x50, Celestron 8x42. EPs: TeleVue: Delites, Plossls & barlows; ES: 82os & 68os; Vixen: SLVs, LVW & NPLs; Baader: BCOs & Aspherics; Meade: UWAs & Plossls; Celestron: X-Cel LXs, Luminos. Filters: Astronomik: UHC; Lumicon: OIII, H-beta, DeepSky; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG. DSO tally: 1085 (H400-1: 400, H400-2: 225, H300-3: 73; M110: 110, S110: 73). Doubles: 625, Comets: 8, Asteroids: 42
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    Default Re: Asteroid questing

    Wow, only 13 of 100 remaining. Quite a good performance. I like the sketches too, nice and functional.
    I have followed one, one or two weeks, years ago. That was all. To me it is actually almost a new sport within the hobby! Very nice!
    Thanks for reminding me to give more attention to it in future.
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    Default Re: Asteroid questing

    Hi Ray. I have been following your great asteroid catches and sketches for some time now, but, I did not realize that you are within 13 of the first 100 asteroids discovered. Congratulations on grabbing 41 Daphne and 93 Minerva. And, I also like your A-B annotations in the star fields to show the asteroids motion. Thanks for sharing these with us on here Ray, and the best of wishes on grabbing the last 13 asteroids.
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    - Marshall
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    Default Re: Asteroid questing

    Looking at the minorplanet.info ephemeris, I realized two more asteroids were just past opposition. 66 Maja and 83 Beatrix are in Pisces, less than 5° apart. Both are about mag 12 and starting to fade. I wanted to catch them while still visible from my rooftop. I could see almost none of the Pisces stars naked eye, so I star-hopped over from Aries. Both asteroids were easily visible with the 7mm DeLite. I used 16mm ES to sketch wider fields.

    In between the asteroids was a bonus. Last year, I had made a finder chart for Van Maanen 2, which is the "closest known solitary white dwarf", 13.9 light years away. It's just 7' from a 5.7 mag star, HIP 3765. At 12.4 mag, was a bit fainter than my asteroids. Again the 7mm DeLite did the trick, even caught a nearby 12.7 mag star.

    I plan to do outreach from the Chabot deck tomorrow night. During a lull, I will go for B positions of the 'roids.
    Ray
    ===
    12.5" f/6 custom Dob by New Moon Telescopes, Orion XT8 f/6 "ruby-red" Dob. Finders 13x80 Stellarvue RACI, 9x50 Orion RACI. Eyepieces 34mm Explore Scientific 68°, 24mm ES 68°, 16mm ES 68°, 10mm TeleVue Delos 72°, 9mm ES 62°, 7mm TeleVue DeLite 62°. Binoculars 12x63 Orion Mini-Giant.

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    Default Re: Asteroid questing

    Congrats on catching two more and the dwarf, Ray!
    Raymondhow likes this.
    Scopes: Celestron: 8" SCT F10, Omni 150R Achro F5, Onyx 80ED F6.3; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, UA MicroStar. Binos: Orion 10x50, Celestron 8x42. EPs: TeleVue: Delites, Plossls & barlows; ES: 82os & 68os; Vixen: SLVs, LVW & NPLs; Baader: BCOs & Aspherics; Meade: UWAs & Plossls; Celestron: X-Cel LXs, Luminos. Filters: Astronomik: UHC; Lumicon: OIII, H-beta, DeepSky; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG. DSO tally: 1085 (H400-1: 400, H400-2: 225, H300-3: 73; M110: 110, S110: 73). Doubles: 625, Comets: 8, Asteroids: 42
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    Default Re: Asteroid questing

    Wonderful asteroid sighting and tracking, Ray!

    Hope to do a "B" sighting of Vesta sometime soon, maybe this weekend.
    Raymondhow likes this.
    Terry
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