Changes between Version 53 and Version 54 of WikiStart


Ignore:
Timestamp:
Sep 12, 2018, 9:33:11 AM (7 years ago)
Author:
Conchi Cárdenas Vázquez
Comment:

--

Legend:

Unmodified
Added
Removed
Modified

  • WikiStart

    v53 v54  
    22Located in the eastern dome of the Elsässer Lab, MPIA operates a 70 cm f/8 Cassegrain telescope ready to be used by students as well as staff for practice, scientific observations, testing of new hardware, or just: fun. It's alternative name - KING - was derived from the german phrase "Königstuhl Instrument zum in den Nachthimmel Gucken" ("Königstuhl Instrument for Night-sky Watching").
    33
    4 [[Image(king70_astralux_ann.png, right, width=350,margin-left=30, title="The 70cm telescope during AstraLux precommissioning", longdesc="The 70cm telescope during AstraLux precommissioning")]]
     4[[Image(king70_astralux_ann.png, right, width=350,margin-left=30, title="The 70 cm telescope during AstraLux precommissioning", longdesc="The 70cm telescope during AstraLux precommissioning")]]
    55
    66It is currently equipped with a scientific grade 2kx2k back-illuminated, nitrogen-cooled SITe CCD -- identical to cameras used e.g. at [http://www.caha.es Calar Alto Observatory]. With a pixel size of 15umx15um it provides a field of view of 18.8x18.8 arcmin. A specially crafted manual filter slider allows unvignetted observations through a wide range of filters, including the standard series of UBVRI as well as an SDSS z' filter and a superb collection of high-performance narrow band interference filters for OII,OIII, H beta, H alpha, SII and SII-continuum (off-line passband). Unguided observations can be as long as 180s, giving you a limiting magnitude of ~19.5mag in the R-band.
    77
     8[[Image(M51_Poster.jpg, left, width=350,margin-right=30, title="M51 with the 70 cm telescope", longdesc="M51 with the 70cm telescope")]]
     9
    810Typical seeing conditions are around 2 arcsec in the visible, but can be as good as 1arcsec. Being located quite outside the city the brightening of the sky due to street illumination is acceptable, and using one of the interference filters gives a pitch-black sky indeed, allowing the acquisition of stunning images of emission nebulae like e.g. the Crab Nebula M1 shown on this page.
    9 
    10 [[Image(king70_m1_ann2.png, left, width=350,margin-right=30, title="The Crab nebulae imaged with the 70cm telescope", longdesc="The Crab nebulae imaged withthe 70cm telescope")]]
    1111
    1212While most observations performed with this telescope have no immediate scientific purpose, the telescope still plays a role in teaching future astronomers the basics of observing with a large telescope and professional camera. Apart from pure fun observations it has been used for a range of projects that place it in the same league as comparable telescopes at "real" observatories:
    … …  
    3737
    3838'''''Clear skies! '''''
     39[[Image(king70_m1_ann2.png, left, width=350,margin-right=30, title="The Crab nebulae imaged with the 70cm telescope", longdesc="The Crab nebulae imaged withthe 70cm telescope")]]
    3940
    4041==  ==