Summer-ring M57
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Summer-ring M57
It was the first deepsky object I ever found with my first purchased 60mm refractor in urban light pollution, some 40 years ago. After quite a few attempts. Fairly small field of view and a star atlas that left more to guess than to find.. (Norton's from early last century) Always kept a warm place in my heart.
This month I spotted him several times. After all, it was fairly cloud-free last week. In the course of a few cloud-free days, you can see that due to the increased smog blanket, the transparency of the sky decreases considerably. A quiet atmosphere, that is. Good for planets. For deepsky, that filth and fog in the air is a lot less fun.
The first sighting this month was with a 140 mm OMC140, a Maksutov. That was the best. The star of magnitude 13 next to the ring then becomes almost immediately visible. It is clear that it is lighter inside the nebula than outside it. The ellipse shape is obvious. On several (other) occasions I have the idea that I still see "something" with averted vision on the other side of the nebula. That turns out to be an even fainter asterisk (just close to the ring).
With larger instruments, of course, this becomes easilly visible. I never saw color. The central star? That was in the early nineties in Rijswijk with a C14, also during a transparent night in August.
With the 120 mm refractor I got more or less the same idea as with the OMC140. The DGM NPB filter picked it up surprisingly nicely, although the conditions had deteriorated slightly and such a filter on M57 at least does not have much effect.
The 102mm grab-n-go achromat also did surprisingly nicely last night, although the conditions were another step down. With great difficulty I detected "something" next to the nebula, our star of magnitude 13 of course. A flash twice in a minute, not enough for a full-fledged observation, but given that I know it's there, I saw it anyway. Perhaps auto-suggestion. Again, the filter showed the ring well, slightly better than without it. My UHC filter, on the other hand, is a little too punishing for this small telescope under these circumstances.
Click on the image for a better view. Main sketch was made at the OMC140. For the final positions of the tiny stars I peeked in Stellarium though..
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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.
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Re: Summer-ring M57
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
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Re: Summer-ring M57
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, Delos, 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: 3122 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2196, S110: 77). Doubles: 2461, Comets: 34, Asteroids: 261
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Re: Summer-ring M57
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.
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Re: Summer-ring M57
AA5TB
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Bresser AR102s, 102 mm, f/4.5, Achromatic Refractor
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Re: Summer-ring M57
Congratulations on the well deserved
-Jeff
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Re: Summer-ring M57
M57 was my first deep sky astrophoto and although it was a rubbish photo, I was very proud of it! So, I too have a soft spot for it!
Congratulations on the
Graeme
Celestron 9.25 f10 SCT, f6.3FR, CGX. Sky-Watcher Evostar-120, HEQ5
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https://www.averywayobservatory.co.uk/
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