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FSQ85

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Open Clusters

The Pleiades (M45) with FSQ85 and G2-8300

M45 widefield

The magnificent Pleiades, known to many as the Seven Sisters, is an open cluster in the constellation of Taurus. The Pleiades have been known since the dawn of antiquity and even some cave paintings from 30000 years ago depict them on cave walls. The cluster is 442 light years away and they are about 20 light years across. The exact distance has been a source of debate amongst astronomers for many years but the matter was recently settled using parallax data from the Gaia satellite. Technical Data Imaged with Takahashi FSQ85 refractor and G2-8300 CCD camera with Astrodon E-series RGB filters.  It consists of 20 x 300 second exposures in each of those filters to give over 90 minutes in each of the three channels for a combined integration of about four and a half hours.  As is normal with any type of cluster, I did not bother with a…

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Open Clusters

M52 with FSQ85 and G2-8300 Camera

M52 Cluster FSQ85 G2-8300

M52 Open Cluster in Cassiopeia M52 is a fabulous open cluster in Cassiopeia.  It is set against a huge amount of nebulosity that spans across the constellations of Cassiopeia and Cepheus.   In this image The Bubble Nebula can be seen at the four o’clock position with respect to M52 and many other objects in the Sharpless Catalogue of nebulae are also visible.  These are detailed in the annotated version of the image below.  The square red box on the finder chart on the right represents the image Technical Information Imaged from my backyard in Nottingham, UK on 28 November 2021 with a FSQ85 refractor and a Moravian G2-8300 cooled CCD camera with Astrodon HaRGB filters on my MESU200 mount guided with OAG.All image data is binned 1×1:Ha> 9 x 300s ; Red > 9 x 300s ; Green 9 x 300s ; Blue > 9 x 300sImage capture is with NINA and processing in PixInsight…

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Galaxies

M33 Galaxy in Triangulum FSQ85 with G2-8300

M33 is a galaxy about 2.8 – 3 million light years away in the constellation of Triangulum.  Along with M33, it is one of the Local Group of galaxies with which our own Milky Way galaxy shares the local universe.  M33 is the most distant object that the human naked eye can see, appearing as a ghostly white smudge on a very dark night from clear skies.  It is a magnificent spiral galaxy about half the size of our own galaxy. M33 Galaxy in Triangulum I’ve imaged the galaxy multiple times.  For example, with the same FSQ85 telescope here and also at a closer image scale with the TEC140 refractor here. This time I have set the galaxy in a slightly wider field by utilising the FSQ85 0.73 reducer.  I used the Moravian G2-8300 CCD camera and Astrodon RGB filters all binned 1×1.  I did not use a separate luminance channel.Data…

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Galaxies

Close Up Study of The Great Andromeda Galaxy M31 with TEC140 and FSQ85

M81_West

M31 is one of the most favoured and popular imaging targets in the night sky; it is bright, large and very photogenic.  I have imaged this galaxy numerous times, for example, in this LRGB version and in this OSC version.   Since the galaxy is so large, each of these images is set in a wide field, one of 3 degrees horizontally and 2 degrees vertically across the field of view which equates to six times the diameter of the full moon. Many newcomers do not appreciate how large these objects are in the sky.  Large but VERY dim! M31 in OSC from a QHY268C and Takahashi FSQ85 refractor The above image is at a resolution of 4.16arcsec/pixel.  On such a large object as M31 this allows the entire galaxy to be imaged in one field of view on a wide field refractor such as the FSQ85 but does not allow…

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