Re: [Utah-astronomy] Colorful Doubles - Mon to Cnc
The following list was originally proposed in early March 2009. Objects on this final list has been completely reviewed. The following is an observing list with respect to my continuing color-contrast-doubles urban-astronomy interest. Because of the deteriorating weather situation (at my local op) and the advancing first quarter moon, I've posted it before completing a review of the entire target list, so others interested in looking at a few targets can do so. For the Mon through Cnc frame, stars with good-to-showcase color contrast (plus bet Mon) are: eps Mon (yellow-tint blue) bet Mon (double white) 15 Mon (white-tint yellow) STF1019(white-blue) Herschel 3945 145G CMa Winter Alberio (yellow-blue) STF1183 (white green-blue-shade) zet Mon (yellow-grey) SAO98013 Center of M44 triple asterism SAO98020-SAO98021 Center of M44 quad iot Cnc Spring Alberio (yellow-blue) The entries start with SAO numbers because that is what I use in my GOTO hand-controller. I understand that both Meade and Celestron hand-controllers have the SAO list. Where an SAO number is not returned by a handcontroller, lookup and use the direct RA-Dec coordinates. This observing list was developed by reviewing color contrast double lists such as Mullaney, Haas and Belmont and then preparing a short list of candidate targets. The candidate list was then reviewed using a 4 1/4 inch short GOTO reflector from an urban light polluted site to determine the practicality of seeing the objects from an urban setting. This list was also expanded to include three prominent carbon stars in this observing frame. Because the portion of the night sky west from Orion is dominated by anti-spinward Orion-Cygnus Arm white OB stars, I wanted to fill-in with some more color. Clear Skies - Kurt MON TO CNC COLOR CONTRAST DOUBLES FOR URBAN SKIES (EAST ORI TO MON) ID SAO113810 Constellation Mon AltNames - Name - HD44769, HIP30419 CommentsSec eps Mon, 8 Mon, 4.4v, 6.5v, 12.1sep, 29pa, 2004,Haas:showcase yellow-lilac,A5IV,- RA 062346 Dec +043534 CommentsMisc - Observation note Showcase pair with contrast per Haas representation. A small gap with white primary and light blue fainter secondary. Very pleasing. Fairly close gap at 40x; wide pair at 100x. Nice pair. ID SAO95659 Constellation Mon Name - HD45725, HIP30564 AltNames bet Mon; 11 Mon; Herschel's Wonder Star CommentsSec 4.7v,5.2v,7.3sep,132pa,2000,Mullaney:blue-blue-blue,0.148kpc,B2 RA 062849 Dec -070158 CommentsMisc - Observation note At 40x appears as single star. At 100x, appears as an easy, split, two nearly equal white stars with a tiny, but distinct gap. A nice warmup for a start of this run with no color contrast. ID NGC2244 Constellation Mon AltNames Rosetta Neb Open Cluster CommentsSec - RA 063224 Dec +045200 CommentsMisc - Observation note Showcase cluster listed for completeness ID SAO114258 Constellation Mon Name - HD47839, HIP31978 AltNames 15 Mon; STF950 CommentsSec 4.6v,9.9vAa-C,16.6sep,14pa,2002,Haas:triple-lemon-white-with-silver,-,- RA 064059 Dec +095344 CommentsMisc At base of Christmas Tree Cluster FG 9.0v,10v,39.5sep,263pa,2002,-,-,- Observation note Two faint stars to the north of 15 Mon at the base of the Christmas Tree Cluster. 15 Mon is white. All three detectable at 25x. At 100x, lemon color of beta barely detectable. In 4.25 inch, thrid faint C star is barely detectable. Faint double to the east of 15 Mon and the triangular corner asterism at the east base of the Christmas Tree is STF952. Struve designations not consistent with Washington Double Star. Is a complex multiple system with two other embedded systems. That it is a complex system is its main attraction. STF951, also in cluster is a similar complex multiple star system. ID NGC2264 Constellation Mon AltNames Christmas Tree Cluster CommentsSec - RA 064106 Dec +095300 CommentsMisc - Observation note Showcase cluster listed for completeness ID SAO152363 Constellation Mon Name - HD53755, HIP34234 AltNames STF1019 CommentsSec 6.5v,9.6vAC,38.5sep,295pa,2004,Haas:whte-blue-triple,-,- RA 070550 Dec -103940 CommentsMisc Triple with AB 6.5v-10.1v,6.4sep Observation note Faint white primary with nice blue fainter secondary. Tertiary not visible. Nice contrast on the primary. ID SAO173349 Constellation Cma Name - HD56577, HIP35210 AltNames 145G Cma, Herschel 3945, Winter Alberio CommentsSec 4.2v, 6.8v,26.6sep,-,-,Showcase yellow-blue pair,-,- RA 0716.6 Dec -2319 CommentsMisc Winter Albireo Observation note Showcase case - exactly as the name implies. ID SAO115756 Constellation CMi AltNames alf CMi, 10 CMi, Procyon CommentsSec 0.4v,11.7v,148.4sep,p17a,1984,Smyth:yellow-white-several-small-stars,-,F5IV RA 073918 Dec +051330 CommentsMisc - Observation note Mullaney and Haas do not list Procyon as double - just a pretty star field per Mullaney. As Mullaney notes, this is a pretty field-of-view that we often do not take the time to appreciate, since it is an alignment star. But the Washington Double Star catalogue shows this as a complex mulitple star system. The more refined CCDM shows Procyon as a triple. CCDM07393+0514. ID SAO135505 Constellation Mon Name - HD67159, HIP39675 AltNames STF1183 CommentsSec 6.2v,7.8v,30.6sep,328pa,2004,Haas:lemon-white-with-green-white,-,B9.5IV RA 080627 Dec -091442 CommentsMisc - Observation note Showcase - nice bright white green-blue tint wide gap pair. Good color contrast. ID SAO135551 Constellation Mon Name - HD67594, HIP39863 AltNames zet Mon; STF1190 CommentsSec 4.4v,10.1vAB,33sep,105pa,1998,Smyth:yellow-gray-blue,-;G2I RA 080836 Dec -025902 CommentsMisc Triple AC 4.4,9.7v,64.7sep,247pa,2002 Observation note Secondary too faint to give good color contrast, but is pleasant system, easy to find. ID SAO97645 Constellation Cnc Name - HD68256, HIP40167 AltNames zet1 Cnc; 16 Cnc; STF1196AB CommentsSec 5.6v,6.6v,0.98sep,52pa,2000,Mullaney:triple-yellow-yellow-yellow,-,F7V RA 081213 Dec +173852 CommentsMisc West of M44 Observation note: Could only split 5.9" AB-C - at 100x. A nice white yellow pair. Excellent but not showcase. ID SAO97646 Constellation Cnc Name - HD68255, HIP40167 AltNames zet2 Cnc; 16 Cnc; STF1196AB CommentsSec 5.6v,6.6v,0.98sep,52pa,2000,Mullaney:triple-yellow-yellow-yellow,-,F8V RA 081213 Dec +173852 CommentsMisc West of M44 Observation note - Could only split 5.9" AB-C - at 100x. A nice white yellow pair. Excellent but not showcase. ID SAO98013 Constellation Cnc Name - HD73618, HIP42497 AltNames - CommentsSec 6.9v,11.9v1.4sep,292pa,2000,Belmont:yellow-orange-white-triple,-,Am RA 083956 Dec +193311 CommentsMisc In center of M44 Observation note - Obvious small triangle asterism off in one corner of central M44 field. Looks orange-blue-blue or yellow-lilac-lilac. This triple and STF1254 are good multiples to know about when presenting M44 at star parties. ID SAO98020 Constellation Cnc Name - HD73709, HIP42549 AltNames - CommentsSec 6.5v,9v,20.5sep,24pa,2000,Belmont:orange-white-quad,-,F2III RA 084021 Dec +194111 CommentsMisc In center of M44 Observation note - Could only make out three stars in quad - 6.0, 6.5 and faint 7.2. Some white-yellow contrast on 6.0-6.5, Mostly pretty due to setting in center of M44. ID SAO98021 Constellation Cnc Name - HD73710, HIP42549 AltNames STF1254 CommentsSec 6.0v,7.2v,10sep,25pa,2004,Haas:yellow-yellow-olive,-,F8V RA 084022 Dec +194012 CommentsMisc In center of M44 Observation note - Could only make out three stars in quad - 6.0, 6.5 and faint 7.2. Some white-yellow contrast on 6.0-6.5, Mostly pretty due to setting in center of M44. ID M44 Constellation Cnc AltNames - CommentsSec - RA 084024 Dec +194000 CommentsMisc - Observation note ID SAO80416 Constellation Cnc Name - HD74739, HIP43103 AltNames iot Cnc; 48 Cnc; Spring Albireo; STF1536AB CommentsSec 4.2v,6.6v,30.5sep,307pa,2000,Belmont:yellow-blue,0.1kpc,G8Iab RA 084642 Dec +284536 CommentsMisc - Observation note - Showcase obvious yellow-blue Alberio look-alike. ID SAO61125 Constellation Cnc Name - HD75959, HIP43721 AltNames 57 Cnc; Struve (STF)1291 CommentsSec 6.1v,6.6v,1.4sep,316pa,2000,Mullaney:yellow-yellow,0.112kpc,G7III RA 085415 Dec +303446 CommentsMisc N.e. of iot Cnc Observation note - No color contrast but good nearly equal white-white pair for split test of small refractor. ID SAO98230 Constellation Cnc Name - HD76221, HIP42549 AltNames X Cnc; AAVSO0849+17 CommentsSec 6.2v,Mullaney:Stellar ruby RA 085523 Dec +171353 CommentsMisc Red carbon variable Observation note - Showcase nice deep orange color. ================== Some supplemental suburban-rural sky doubles with color contrast - too faint for urban skies ID SAO152427 Constellation CMa Name - HD54361 AltNames W CMa CommentsSec 6.7v, carbon star RA 070803 Dec -115522 CommentsMisc - Observation note - Nice deep dark orange color. Recommend as suburban-rural target; not urban target. ID SAO80425 Constellation Cnc Name - HD74857 AltNames gam Cnc; 43 Cnc; STF1967; Asellus Borealis CommentsSec 4.7v,8.1v,106.3sep,66pa,2000,-,0.050kpc,A1IV RA 084715 Dec +213235 CommentsMisc - Near M44. Recommend for suburban-rural skies. Not urban target. Observation note - (From suburban skies) Bright white A star with superwide faint sea blue companion. Companion may not be observable from urban setting. ID SAO61177 Constellation Cnc Name - HD76813, HIP44154 AltNames sig01 Cnc CommentsSec 5.7v,10.2vAC,77sep,24pa,2003,Haas:triple-yellow-gray-gray,-,A8 RA 085933 Dec +322507 CommentsMisc - Recommend for suburban-rural sites. Not urban target. Observation note - (From suburban site). White-faint blue primary. Probably not visible from urban site. ================= This post is a continuation of my posts that concerning on my current observing focus: "after-work urban-astronomy". Urban astronomy focuses on using easily set up GOTO scopes across for seasons to view astronomical objects from urban light-polluted skies. As opposed to deep sky object emphasis, urban astronomy concerns bright objects visible with small apetures e.g. - open clusters, double stars, planetary and solar system objects. Having family, friend and work obligations like the rest of you, I will try to limit referenced targets to those observable prior to local midnight.
I returned this week from visiting my wife in a suburb of Stockholm Sweden, which is 59 degrees North. In spite of knowing better, it still freaked me out a little one clear night to find the Dipper directly overhead! :o)
What shame they are limited to mostly circumpolar objects (boring). My big shock was seeing Sagittarius overhead in the Everglades. How far north do you need to be to witness the midnight sun?
I returned this week from visiting my wife in a suburb of Stockholm Sweden, which is 59 degrees North. In spite of knowing better, it still freaked me out a little one clear night to find the Dipper directly overhead! :o)
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If you are there in midsummer as I was last July, it never gets dark at night (though the sun does briefly set). So observing summer objects is limited to late-night spring or early fall. But my wife assures me it nonetheless is a magic time; she says more babies are conceived that time of year than any other... ;o) --- On Thu, 3/26/09, erikhansen@TheBlueZone.net <erikhansen@TheBlueZone.net> wrote:
From: erikhansen@TheBlueZone.net <erikhansen@TheBlueZone.net> Subject: Re: [Utah-astronomy] Perspective To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, March 26, 2009, 4:48 PM
What shame they are limited to mostly circumpolar objects (boring). My big shock was seeing Sagittarius overhead in the Everglades. How far north do you need to be to witness the midnight sun?
I returned this week from visiting my wife in a suburb of Stockholm Sweden, which is 59 degrees North. In spite of knowing better, it still freaked me out a little one clear night to find the Dipper directly overhead! :o)
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I did not realize Stockholm was that far north. I was on a layover in Stockholm waiting for the weather to clear in Copenhagen. It was is January and it did resemble the arctic. I also remember flying over Iceland, I did look icy.
Was it magic for the both of you? Sorry, I had to throw that in. Erik
If you are there in midsummer as I was last July, it never gets dark at night (though the sun does briefly set). So observing summer objects is limited to late-night spring or early fall. But my wife assures me it nonetheless is a magic time; she says more babies are conceived that time of year than any other... ;o)
--- On Thu, 3/26/09, erikhansen@TheBlueZone.net <erikhansen@TheBlueZone.net> wrote:
From: erikhansen@TheBlueZone.net <erikhansen@TheBlueZone.net> Subject: Re: [Utah-astronomy] Perspective To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, March 26, 2009, 4:48 PM
What shame they are limited to mostly circumpolar objects (boring). My big shock was seeing Sagittarius overhead in the Everglades. How far north do you need to be to witness the midnight sun?
I returned this week from visiting my wife in a suburb of Stockholm Sweden, which is 59 degrees North. In spite of knowing better, it still freaked me out a little one clear night to find the Dipper directly overhead! :o)
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Now consider that it's at about the same latitude as Dublin, Ireland, and is actually further south than Edinburgh, Scotland. Even merry old England lacks a dark summer sky. On Thu, Mar 26, 2009 at 5:32 PM, <erikhansen@thebluezone.net> wrote:
I did not realize Stockholm was that far north.
Hi Chuck, You are surely looking at a different globe than I have... Norm Chuck Hards wrote:
Now consider that it's at about the same latitude as Dublin, Ireland, and is actually further south than Edinburgh, Scotland. Even merry old England lacks a dark summer sky.
On Thu, Mar 26, 2009 at 5:32 PM, <erikhansen@thebluezone.net> wrote:
I did not realize Stockholm was that far north.
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Chuck, maybe you're thinking of Amsterdam or Copenhagen? Stockholm's at 59 + deg N. Dave On Mar 27, 2009, at 10:37 AM, Norm Hansen wrote:
Hi Chuck,
You are surely looking at a different globe than I have...
Norm
Chuck Hards wrote:
Now consider that it's at about the same latitude as Dublin, Ireland, and is actually further south than Edinburgh, Scotland. Even merry old England lacks a dark summer sky.
On Thu, Mar 26, 2009 at 5:32 PM, <erikhansen@thebluezone.net> wrote:
I did not realize Stockholm was that far north.
Chuck,
Tyco did not have the telescopes we have today. I was at the Texas Star Party and made friends with an astronomer from Montana with a 17" Dobson. He was glad to share his telescope and in return I introduced him to the southern sky. I remember his reaction to seeing many southern sky objects for the 1st time. Copenhagen did seem much more temperate than Stockholm. Some of the far northern scottish islands are as far north as Stockholm. The Europeans are seeing much more profound effects of climate change than the States. I understand that England is becoming better wine country than southern France. Erik Chuck, maybe you're thinking of Amsterdam or Copenhagen? Stockholm's
at 59 + deg N.
Dave
On Mar 27, 2009, at 10:37 AM, Norm Hansen wrote:
Hi Chuck,
You are surely looking at a different globe than I have...
Norm
Chuck Hards wrote:
Now consider that it's at about the same latitude as Dublin, Ireland, and is actually further south than Edinburgh, Scotland. Even merry old England lacks a dark summer sky.
On Thu, Mar 26, 2009 at 5:32 PM, <erikhansen@thebluezone.net> wrote:
I did not realize Stockholm was that far north.
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Erik, I was JOKING ABOUT TYCHO. Just a JOKE. I forgot that even sarcasm and jokes get peer-reviewed here. lol. Norm is correct in that the map I referenced was not really a map- it was an illustration of Europe, drawn freehand now that I compare it to a real map, not accurate at all, but it was all that I had handy, without time to poke around on-line at the time. I can see that my description was erroneous. I'm flattered that my jokes actually sent someone to the atlas to look it up. Hell, I don't take myself seriously, none of you should, either. Here's the way it came across to me... After all the posts on here about making the most of the skies one has, comments on somebody at a northerly lattitide having a "boring" sky just rang a bit hollow. I'll keep the humor to myself from now on. ;o)
Chuck,
I imagined you where joking. The fellow from Montana commented that he was tired of looking at mostly circumpolar objects. Most of my comments were also tongue and cheek. But, seriously I read that the one of the reasons that nights appear so short in much of the european costal regions is because of the long twilights caused by sun setting over the Atlantic. Back to alternate energy resources I found this on Wiki The Gulf Stream transports about 1.4 petawatts of heat, equivalent to 100 times the world energy demand.[25] and research is underway to tap this power in a couple of different ways. One idea, which would supply the equivalent power of several nuclear power plants, would deploy a field of underwater turbines placed 300 metres (980 ft) under the center of the core of the Gulf Stream. Ocean thermal energy could also be harnessed to produce electricity, utilizing the temperature difference between cold deep water and warm surface water.[26] Erik, I was JOKING ABOUT TYCHO. Just a JOKE. I forgot that even sarcasm
and jokes get peer-reviewed here. lol.
Norm is correct in that the map I referenced was not really a map- it was an illustration of Europe, drawn freehand now that I compare it to a real map, not accurate at all, but it was all that I had handy, without time to poke around on-line at the time. I can see that my description was erroneous. I'm flattered that my jokes actually sent someone to the atlas to look it up. Hell, I don't take myself seriously, none of you should, either.
Here's the way it came across to me... After all the posts on here about making the most of the skies one has, comments on somebody at a northerly lattitide having a "boring" sky just rang a bit hollow.
I'll keep the humor to myself from now on. ;o) _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
Humor is always welcome.
On 27 Mar 2009, at 15:38, Chuck Hards wrote:
I'll keep the humor to myself from now on. ;o)
Don't do that Chuck. Your humorous posts are needed to break up some of the serious stuff discussed here.
patrick :)
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Hi Erik, OK, just for you and Patrick I'll toss a joke out here once in a while. Laugh at your own risk. I'm back in "home remodeling mode" for spring (such as it has been, sigh). Sorry it's taken me so long to reply- I see there are 150 unread messages from Utah-astronomy in my IN box! For the past 5 days I've been doing drywall, painting, and today I re-carpeted a stairwell. Not too bad for an amateur, if I do say-so, myself. ;o) The sky finally looks pristinely clear tonight. If I wasn't so dead-dog tired, I'd take out a small scope and check out the moon and Saturn. 2009/3/28 <erikhansen@thebluezone.net>
Humor is always welcome.
On 05 Apr 2009, at 20:32, Chuck Hards wrote:
The sky finally looks pristinely clear tonight. If I wasn't so dead- dog tired, I'd take out a small scope and check out the moon and Saturn.
Maybe you don't need to feel too bad about not being out tonight. I just started the night's imaging and the stars will not come to a sharp focus and instead look more like blobs (fortunately for light curve work that doesn't make any difference). So I'm guessing the jet stream is lurking nearby and messing up the seeing. patrick
Yes, but the circumpolar sky is HUGE there. If it was good enough for Tycho, it's good enough for the likes of you! * ;o) * On Thu, Mar 26, 2009 at 4:48 PM, <erikhansen@thebluezone.net> wrote:
What shame they are limited to mostly circumpolar objects (boring).
participants (7)
-
Canopus56 -
Chuck Hards -
Dave Bennett -
erikhansen@TheBlueZone.net -
Norm Hansen -
Patrick Wiggins -
Richard Tenney