Struve 1424

Richard Jepeal
Star: Struve 1424
Date: April 2, 2006
Time: 8:45PM to 10:00PM EDT
Seeing: 5/10
Transparency: ---
Location of site: New Britain, Connecticut
USA
Site classification: Urban
Conditions: 11-day-old-moon
Sky darkness: ---
Telescope: 8in Celestron Nexstar
Eyepieces: ---
Magnification:

Primary looks a little bluish.  Moon nearby.
        
 
Luis Argüelles
Star: Struve 1424
Date:  7 April 2006
Time: 10:0 UT
Seeing: n/a
Transparency: n/a
Location of site: Oviedo, Spain
Site classification: Urban
Sky darkness: daylight
Telescope: n/a
Imaging: STScI Digitized Sky Survey
 Eyepieces: n/a.
Magnification: Unknown

 From the posting by Richard Jepeal on the S33 Forum, it seems at first sight that Struve 1424 is in fact Gamma Leonis. A quick check using the program Starry Night Pro seems to confirm this. In fact, Starry Night databases identifies Gamma Leonis with STF 1424. However, making a zoom on the area, it can be seen that the location, given by RA and Dec of STF 1424 is not exactly the same as the location of Gamma Leonis, as can be seen in the following captured image:


 
In order to check this in more detail, I tried the Digitized Sky Survey Database, obtaining the following image:


 
A match can be observed between the two images, where an hipothetical position for Struve 1424 can be seen. So, is Gamma Leonis the same star as STF 1424?. More observations are expected to come from members of the S33 Group.
     

Florent Losse
Star: Struve 1424
Date: April 6th and 7th 2006
Time:
Seeing: 8 of 10
Transparency: very good
Location of site: 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m lim=6
Telescope: Homemade Newton 8" used at EFL=4.70 m
Imaging device: Audine CCD (KAF400)
Imaging software: Pisco
Reduction: Reduc v3.62
Eyepieces: Visual notes with the 120mm guidescope and 20mm eyepiece
Magnification: 50x

 the 'confusing star' of the project. Always an emotion, one of the greatest visual doubles. Algieba is AB, the project points to the large CD couple easily seen in the west. Alas, the CCD's field of view isn't large enough to put the four components on a single frame. Measurements AB : 125°3 / 4"66, CD : 002°3 / 90"18.
 
Ambience : tonight I'm not alone in my observatory, it deserves to be mentioned. My guest star is my daughter who exceptionally wants to do astronomy 'avec papa'. Welcome aboard young astronomer, you'll help me to refine the collimation. With a so great help, the collimation was an affair of some minutes :-) The atmosphere is really steady and after the technical exercise it  allows us to use high magnifications on Saturn and to take a low altitude flight on the Moon.
It was 'Ho !' and 'Ha !' for an hour and I think she will come again soon.
  
 

 

    
       

Tomás Vazquez Chiscano
Star: Struve 1424
Date: 17/04/2006
Time: 23:43:00 (UT)
Seeing: 4 of 10
Transparency:
Location of site: 37 24 N. 5 58 W. Sevilla. (Spain)
Site classification: Urban
Conditions:
Sky darkness: 3 (limiting magnitude)
Telescope: Celestron C8 D:203mm. Reducer Focal: F/6,3.
Imaging device: Camera SXL8 CCD(FT12).
Reduction software: LAIA 3.2A (GEA)
Image software: LUCAS 1.2C
Telescope Computer Interface: Homemade Astro-Guider.
Eyepieces: Not used
Magnification: n/a

 Position Image: North up, East left.
Time of Integration: 10x7 seconds.
The measures that I have taken out the double star, of the Angle of Position and Separation, are the following.

STF1424 A-C. AP:288.02º D:325.72"
STF1424 A-D. AP:301.49º D:359.26"
STF1424 C-D. AP:2.24º D:86.98"
       

Steve Bodin
Star: Struve 1424
Date: 27 Apr 2006
Time: 10pm to 11pm
Seeing: 4-5/10
Transparency: good
Location: Mattawa Wa, USA, 46.7N,119.9W
Site classification: Rural
Conditions:
Sky darkness: limiting mag 6.5
Telescope: Meade 16 inch LX200GPS UHTC
Eyepieces: not used
Imaging: Orion Starshoot CCD at f3.45 with reducer and DX8263SL video camera at f10 and f30
Magnification: app. 200x ,600x, 1800x

 One of my favorite targets, but the project is for the CD faint stars. These don't fit in the normal FOV of the big Meade, so used my CCD camera at f3.45 with reducer to image. This new camera is very sensitive, imaged at 0.005 sec exposure and AB was still maxed out, but CD showed fine. Also used the videocam for the AB pair, but should have used more magnification to improve the measurement. Measurements: AB 4.83 sec at 125.4 deg PA, AC 321.3 sec at 288.1 deg PA, CD 89.5 sec at 002.6 deg PA.
  

  

     

Axel Tute
Star: Struve 1424
Date: 11-05-06
Time: 20:02 UT
Seeing: 7 from 10
Transparency: 7 from 10
Location of site: Kuessaberg-Dangstetten /
Germany
Site classification: Rural
Conditions: no wind, 13.3C, humidity 59%
Sky darkness: 4mag (full moon)
Moon: short before full moon
Telescope: Celestron 8
Eyepieces: 26mm Plössel, 12mm RKE
Magnification:  77x, 167x
Diagonal: Yes

Split AB with the 12mm RKE. C and D outside the field. With 26mm Ploessel AB can be seen as an eight. C and D visibel. Primary is blue.

 

     

        

William Schart
Star: Struve 1424
Date:  24 Mayl 2006
Time: 10:56 PM
Seeing: about 6-7/10
Transparency: clear
Location of site: Columbia, USA
Site classification: Suburban
Sky darkness: ---
Telescope: C8
Eyepieces: 25mm, 17mm
Magnification:

The CD pair lies some distance to the east of the AB pair, with the D almost due N of the C Quite wide and easy to split. No color.


     
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