The other, perfect double double in Lyra.
- John Baars
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The other, perfect double double in Lyra.
Last night it seemed to be crystal clear. I put my 102mm Vixen refractor out early . Sometimes I make it a sport to visit Wega before the sun has disappeared below the horizon. That works most of the time. Then I did some tests to see which configuration I will take with me on holiday.
Epsilon Lyrae, the regular double double, with the sun still up. After sundown STF2470 and STF2474, the other double double. Skysafari knows them. Not difficult to find, it is a 3+ degree Northeast star-hop from Sulafat. The two pairs seem to be almost parallel, just not quite. Nice is that their weaker opposites are both oriented on the same western side. The two fainter ones also appear to be a different color and equally distant from their main star. All this reinforces the idea of uniformity. All in all they seem, though fainter, a tad more perfect than the Epsilon-couple. This other double couple forms a nice triangle with a fifth star, a bit farther West. Together with that star of Mv. 8.9 it's a nice sight. Too bad they aren't that well known.
Here's a sketch I made some years ago. I went over it in the computer to generate more round stars. Magnification in the 4 inch refractor was around 180 X.
Then I went necessarily back inside to pick up my short double starlist, I had written down the coordinates for that evening. When I arrived outside again, thick strings of veils and mist hang over my head. So condensed that even Wega could hardly get through. Swallow.... Then just clean up. Later in the night when I checked the sky in my flannel, during a short stop, I could see another crystal clear sky again, with Saturn and Jupiter shining perky. The temperature had dropped significantly. Eehhh... no, I didn''t feel like going outside again. There will be another time.
Epsilon Lyrae, the regular double double, with the sun still up. After sundown STF2470 and STF2474, the other double double. Skysafari knows them. Not difficult to find, it is a 3+ degree Northeast star-hop from Sulafat. The two pairs seem to be almost parallel, just not quite. Nice is that their weaker opposites are both oriented on the same western side. The two fainter ones also appear to be a different color and equally distant from their main star. All this reinforces the idea of uniformity. All in all they seem, though fainter, a tad more perfect than the Epsilon-couple. This other double couple forms a nice triangle with a fifth star, a bit farther West. Together with that star of Mv. 8.9 it's a nice sight. Too bad they aren't that well known.
Here's a sketch I made some years ago. I went over it in the computer to generate more round stars. Magnification in the 4 inch refractor was around 180 X.
Then I went necessarily back inside to pick up my short double starlist, I had written down the coordinates for that evening. When I arrived outside again, thick strings of veils and mist hang over my head. So condensed that even Wega could hardly get through. Swallow.... Then just clean up. Later in the night when I checked the sky in my flannel, during a short stop, I could see another crystal clear sky again, with Saturn and Jupiter shining perky. The temperature had dropped significantly. Eehhh... no, I didn''t feel like going outside again. There will be another time.
Refractors in frequency of use : *SW Evostar 120ED F/7.5 (all round ), * Vixen 102ED F/9 (vintage), both on Vixen GPDX.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
GrabnGo on Alt/AZ : *SW Startravel 102 F/5 refractor( widefield, Sun, push-to), *OMC140 Maksutov F/14.3 ( planets).
Most used Eyepieces: *Panoptic 24, *Morpheus 14, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.
Commonly used bino's : *Jena 10X50 , * Canon 10X30 IS, *Swarovski Habicht 7X42, * Celestron 15X70, *Kasai 2.3X40
Rijswijk Public Observatory: * Astro-Physics Starfire 130 f/8, * 6 inch Newton, * C9.25, * Meade 14 inch LX600 ACF, *Lunt.
Amateur astronomer since 1970.
- helicon
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Re: The other, perfect double double in Lyra.
Thanks for the excellent report John on a somewhat overlooked object!
Nice sketch as well. Congratulations on winning theVROD for the day!
Nice sketch as well. Congratulations on winning the
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
- kt4hx
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Re: The other, perfect double double in Lyra.
Nicely done John and congrats on the VROD . I think I recall seeing this other double-double when I was observing galaxies in Lyra about four years ago. When I was hunting the mag 12.8 barred spiral UGC 11397 I picked them up not quite 1.5° northeast of the galaxy. I often run across interesting doubles while galaxy hunting but don't really research them much. But some do get etched into my memory.
Alan
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
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"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
Scopes: Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob ||
ES AR127 f/6.5 || ES ED80 f/6 || Apertura 6" f/5 Newtonian
Mounts: ES Twilight-II and Twilight-I
EPs: AT 82° 28mm UWA || TV Ethos 100° 21mm and 13mm || Vixen LVW 65° 22mm ||
ES 82° 18mm || Pentax XW 70° 10mm, 7mm and 5mm || barlows
Filters (2 inch): DGM NPB || Orion Ultra Block, O-III and Sky Glow || Baader HaB
Primary Field Atlases: Uranometria All-Sky Edition and Interstellarum Deep Sky Atlas
---------------------------------------------------------------------------
"Astronomers, we look into the past to see our future." (me)
"Seeing is in some respect an art, which must be learnt." (William Herschel)
"What we know is a drop, what we don't know is an ocean." (Sir Isaac Newton)
"No good deed goes unpunished." (various)
“Some people without brains do an awful lot of talking, don't you think?” (Scarecrow, The Wonderful Wizard of Oz)
- Bigzmey
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Re: The other, perfect double double in Lyra.
Neat target John! Thanks for bringing it up. They are on my list by I have not gotten to observe them yet. Nice thing is that they are wider separated than the Double Double, so it is a good target to practice before attempting the original Double Double.
Congrats on theVROD !
Congrats on the
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
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Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- Unitron48
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Re: The other, perfect double double in Lyra.
Very nice, John! Congrats on the VROD ! I usually visit that pair when in the constellation.
Dave
Dave
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Stellarvue SVX127D
http://www.unitronhistory.com
"Look deep into nature, and then you will understand everything better." Albert Einstein
Stellarvue SVX127D
http://www.unitronhistory.com
"Look deep into nature, and then you will understand everything better." Albert Einstein
- Kanadalainen
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Re: The other, perfect double double in Lyra.
"...another time." Such a healthy attitude John. Thanks for your report.
KInd regards,
KInd regards,
Ian
Fracs: Stellarvue 70T f6; SW 120mm Esprit f7; "Mark Mk. II" - 60 mm Tasco f6; C80 frac f 11.4
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"Mothers! It is there!" - Rafael Gonzales-Acuna, 2018.
Fracs: Stellarvue 70T f6; SW 120mm Esprit f7; "Mark Mk. II" - 60 mm Tasco f6; C80 frac f 11.4
SCT: C8 Edge f10 or f7 with reducer
Dob: 14.5" homebuilt strut dob (f4.5 ZOC mirror), Nexus II, Moonlite focuser
Mounts - Ioptron Skyguider pro, Astro Physics GTO900
Cameras and lenses - ZWO 2600 mc, 290 mm mini, Canon 60D modded with Rokinon 10mm 2.8; Rokinon 135mm f2
Skysafari 6 Pro, Astro Pixel Processor, Pixinsight - using Mac tablet and ASIair pro to run the AP rig.
"Mothers! It is there!" - Rafael Gonzales-Acuna, 2018.
- Makuser
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Re: The other, perfect double double in Lyra.
Hi John. A very nice observing report with the 4" Vixen refractor. And a very good sketch of this lesser known double- double. Thanks for your report John and congratulations on receiving the TSS VROD Award.
Marshall
Sky-Watcher 90mm f/13.8 Maksutov-Cassegrain on motorized Multimount
Orion Astroview 120ST f/5 Refractor on EQ3 mount
Celestron Comet Catcher 140mm f/3.64 Schmidt-Newtonian on alt-az mount
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Orion XT12i 12" f/4.9 Dobsonian Intelliscope.
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>)))))*>
Sky-Watcher 90mm f/13.8 Maksutov-Cassegrain on motorized Multimount
Orion Astroview 120ST f/5 Refractor on EQ3 mount
Celestron Comet Catcher 140mm f/3.64 Schmidt-Newtonian on alt-az mount
Celestron Omni XLT150R f/5 Refractor on CG4 mount with dual axis drives.
Orion 180mm f/15 Maksutov-Cassegrain on CG5-GT Goto mount.
Orion XT12i 12" f/4.9 Dobsonian Intelliscope.
Kamakura 7x35 Binoculars and Celestron SkyMaster 15x70 Binoculars. ZWO ASI 120MC camera.
>)))))*>
- Butterfly Maiden
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Re: The other, perfect double double in Lyra.
Another great report John, and congratulations on receiving the TSS VROD award for your effort.
Vanessa
Nikon D82 Fieldscope with 30x/45x/56x angled eyepiece.
Olympus DPS-1 10x50 binoculars.
Leica 8x32BN binoculars.
Nikon D82 Fieldscope with 30x/45x/56x angled eyepiece.
Olympus DPS-1 10x50 binoculars.
Leica 8x32BN binoculars.
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