Meteor Detector Report for May 2019

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MeteorCam2019-05The short nights and poor weather have conspired to reduce the number of meteors we have been able to detect, but we still managed to detect 44 meteors, 30 of them sporadic.

 

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Observing the Moon with our new Dobs, ‘Olivia’ and ‘Isaacs’

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Thursday 6th June was clear so we took the opportunity to view the Moon using our new Dob's affectionately named 'Olivia' and 'Isaac'.

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Colimating-a-dob

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Building Dobsonian Mounts

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Members Steve and Dave with some technical support from Keith have built another two Dobsonian telescopes for the society using donated Newtonian tubes, one is a 200mm F5 Skywatcher the other a 300mm F5.3 Orion Optics.

The design is the same as the previous Dobsonian mount they presented to the society last year, which is affectionately known as Anita.

The Telescopes are equipped with a 'push-to' system we call 'Dob Buddy' which was originally presented to the society by fellow member Simon. The Dob buddy allows members using an Android or Apple mobile device, equipped with Sky Safari Pro to locate difficult to find objects in the night sky with ease.

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The Plans

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The Dob buddy system uses an Arduino with low resolution encoders couples to the mount with timing belts, this system results in a very high resolution encoder system for a fraction of the costs (the encoders are £8!), all the heavy lifting in terms of tracking the telescopes position is managed by the Sky Safari Pro software. The limitations of the Apple IOS operating system not being able to send data over Bluetooth are circumvented by providing Wi-fi access to Dob Buddy. 

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Two mounts were constructed from Birch faced ply. It was decided that Anita (our first Dobsonian) was a bit heavy, so the new Dob's were put on a diet, by cutting holes in the ply. 

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Parts ready for assembly. 

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Our Dobs are named after gifted musicians, because we used their vinyl LPs as a bearing for the azimuth mount.  

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The design of the mounts for the altitude bearings was changed (compared to 'Anita') to again reduce weight and reuse as much as possible of the old 'scopes.

dobsonians-alybearingsOur Dobs are named after gifted musicians, because we used their vinyl LPs as a bearing for the azimuth mount.  

 

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Isaac and Olivia complete.

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Isaac and Olivia complete.

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BAA Winchester Weekend 2022

At this years 2022 BAA Winchester weekend members Steve Floodgate and Dave Grist presented an update about their experiences of building Dobsonian telescopes for the society. Below is a link that you can click on to download a PDF version of the PowerPoint presentation they used at the event. 

Winchester presentation update1

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22 Degree Solar Halo

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Images By Diane Clarke

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22-Deg-Solar-halo_Diane Clarke

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First Light with a new CCD on RS Boo

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A phase curve from Martin Crow's first four sets of  test observations using the pulsating star RS Boo as a target. Period 0.37733days. Acquired with 235mm SCT @ f6.3 and SX694 camera and sxcon software . Processed with AIJ and VSS spreadsheet.

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