· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Astrophotography and Sketching >> Sketching Previous   Index   Next   Threaded   Pages: 1 rodelaet Post Laureate Reged: 04/28/06 Loc: 50°56' N - 4°58' E (Belgium) Binocular Icon 57 : Sagitta and M71       #3170005 - 06/18/09 04:11 PM Attachment (56 downloads) Edit   Reply   Quote Quick Reply   Sagitta is a small but fascinating constellation. It fits completely in a common pair of binoculars. A fine bonus is offered by the presence of the loose globular, M71. This globular is visible as a hazy spot between Gamma and Delta Sagittae. The object is flanked by two mag 11 stars, one NW of the cluster and one S of the cluster. My 15x70’s shows both Gamma and Delta in one field of view. The whole field gives a great sense of depth. Gamma Sagittae (near the left edge of the sketch) is relatively nearby with a distance of 260 l-y. Delta Sagittae’s distance is about 460 l-y. M71 on the other hand is 13.000 l-y away, hovering at the edge of the galactic plane. From our line of sight towards M71, we probably have to look through a large portion of the dust and gas clouds of the galactic plane. It occurs to me that a lot of M71’s light might be blocked by interstellar absorption. My choice of binoculars was the 15x70 (compared to my 8x56) to conquer the sky glow of our midsummer nights. Site : Bekkevoort, Belgium ( 51° N ) Date : June 16, 2008 Time : around 23.30UT Binoculars : TS 15x70 Marine FOV: 4.4° Filter : none Mount : Manfrotto tripod and head Seeing : 3/5 Transp. : 2.5/5 Sky brightness : 19.49 magnitudes per square arc second near zenith (SQM reading). Nelm: 5.3 Sketch Orientation: N up, W right. Digital sketch made with Corel Paint Shop Pro X2, based on a raw pencil sketch. (Note: if the sketch does look too dark on your monitor, try to darken the room.) Edited by rodelaet (06/21/09 03:59 PM) Post Extras:       Tommy5 Carpal Tunnel Reged: 03/28/04 Loc: Chicagoland Re: Binocular Icon 57 : Sagitta and M71 [Re: rodelaet]       #3170033 - 06/18/09 04:24 PM Edit   Reply   Quote Quick Reply   Very nice sketch, i use Sagitta as a jump off to find m-27, it is a cool little constellation in binoculars. Post Extras:       frank5817 Postmaster Reged: 06/13/06 Loc: Illinois Re: Binocular Icon 57 : Sagitta and M71 [Re: Tommy5]       #3170304 - 06/18/09 07:12 PM Edit   Reply   Quote Quick Reply   Rony, Excellent sketch of this very nice globular in Sagitta. It is always a treat to view this globular on a clear summer night and like T5 says you can use little Sagitta to move to M 27. Great sketching, those of us sketching in Chicagoland are waiting for a break in our strange weather. Frank Post Extras:       CarlosEH Postmaster Reged: 01/19/05 Loc: Pembroke Pines, Broward County... Re: Binocular Icon 57 : Sagitta and M71 [Re: frank5817]       #3170334 - 06/18/09 07:30 PM Edit   Reply   Quote Quick Reply   Rony, A beautiful and accurate observation and report of Sagitta and M71. You have recorded the star field surrounding M71 perfectly. The stars appear to glow in your rendering. Thank you for sharing it with us all. Carlos Post Extras:       kraterkid Post Laureate Reged: 03/07/05 Loc: Jacumba, California Re: Binocular Icon 57 : Sagitta and M71 [Re: CarlosEH]       #3170700 - 06/18/09 11:29 PM Edit   Reply   Quote Quick Reply   Superb sketch and observation report Rony! Stunning sense of depth in this little gem of a constellation. These Binocular Icons are simply spectacular! Post Extras:       daniel_h Carpal Tunnel Reged: 03/08/08 Loc: VIC, Australia Re: Binocular Icon 57 : Sagitta and M71 [Re: kraterkid]       #3170840 - 06/19/09 01:10 AM Edit   Reply   Quote Quick Reply   rony, more great work, well done - its too cold here in Aust. at the minute - I don't know how the Nth Americas & you europeans brave the cold to keep going during our summer Post Extras:       olivier sage Reged: 01/05/05 Loc: Belgium - Leuven Re: Binocular Icon 57 : Sagitta and M71 [Re: daniel_h]       #3171933 - 06/19/09 05:02 PM Edit   Reply   Quote Quick Reply   Hi Rony Once again a very nice sketch. What is amazing is that you need dark adaptations to see more details. It's really like looking through a real telescope. Post Extras:       rd56 sage Reged: 12/17/06 Loc: Central New Jersey Re: Binocular Icon 57 : Sagitta and M71 [Re: olivier]       #3172669 - 06/20/09 03:40 AM Edit   Reply   Quote Quick Reply   Rony, Beautiful rendering with exceptional detail. It does indeed appear as though one is viewing this through an actual eyepiece. Ron Post Extras:       Roel sage Reged: 04/22/07 Loc: Deventer, The Netherlands Re: Binocular Icon 57 : Sagitta and M71 [Re: rd56]       #3172724 - 06/20/09 05:45 AM Edit   Reply   Quote Quick Reply   Incredible! The amount of stars in your sketch is just breathtaking. Because of the good rendering of their differences in brightening it looks very realistic. I also like the subtle contrast between both M71 and the surrounding field. It's very tempting to exaggerate contrast in a deepsky sketch, but you always make it just right. I've read on your site that you're planning to publish your observation in a book. I'd be the first one to buy a copy! Post Extras:       rodelaet Post Laureate Reged: 04/28/06 Loc: 50°56' N - 4°58' E (Belgium) Re: Binocular Icon 57 : Sagitta and M71 [Re: Roel]       #3174967 - 06/21/09 05:52 PM Edit   Reply   Quote Quick Reply   Thanks, guys, for the kind words. @Roel : Binoculars take in a lot of field, and also milkyway stars. The view from a realy dark site can be very discourageing to sketch from. Edited by rodelaet (06/21/09 05:54 PM) Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 4 registered and 4 anonymous users are browsing this forum. 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