Solar Filter for Heritage 100P and 114P and Skymax-102 OTA

Introduction | Photos of the euro EMC Solar Filter (Size 5) | Photos of the Heritage 100P Equipped with Solar Filter | Photos of the Heritage 114P Equipped with Solar Filter | Photos of the Skymax-102 OTA Equipped with Solar Filter | Links

Introduction

In order to be able to watch the Mercury transit of the sun in May 2016, I acquired a euro EMC solar filter for my Sky-Watcher Heritage 100P Dobsonian telescope, namely the type SF100 filter (order no. 600-105, size 5: for tubes with a diameter from 103 to 131 mm). These filters utilize the Baader Planetarium Astro Solar film of density 5 (ND5), which is suitable for both visual observation and projection photography.

Initially, I had purchased a solar filter from the same series for my GSO GSD 680 8 "Dobsonian telescope (order no. 600-109, size 9: for tubes with a diameter from 219 to 283 mm). But I had to order also this smaller filter, because, due to a surgery, I was no longer able to carry my heavy 8" telescope. I therefore had to resort to my smallest telescope, the Heritage 100P, for the observation of the transit. The second filter arrived at my house in time, and I was able to adjust it to the telescope and try it out on a sunspot on the weekend before the transit.

After the Mercury transit, I purchased a Sky-Watcher Heritage 114P Virtuoso Dobsonian telescope that can automatically tracking celestial objects. Although this telescope has a larger tube diameter, I could use the sun filter also on this telescope, if I put the filter holders inside the tube (according to the manufacturer, a certain degree of vignetting will appear in this case). In the meantime, however, I returned the Heritage 114P due to problems with the Virtuoso control.

Note: See also pages Sun Filter for the GSD 680 and Mercury Transit 2016.

 

Photos of the euro EMC Solar Filter (Size 5)

   

Packaging of the filter from above

 

Ditto from below and with included Allen wrench

 

Filter from below

 

Filter from above

The filter comes with a small Allen wrench (see photo above right) to tighten the filter holders. It must be noted that the disc-shaped sun visors have to fit properly, so that no sunlight can penetrate through any slots.

 

Photos of the Heritage 100P Equipped with Solar Filter

   

Heritage 100P with sun filter

 

Heritage 100P with sun filter, front view

 

Heritage 100P with sun filter from the side

 

Ditto, a closer look

 

Heritage 100P with sun filter

 

Ditto

The filter has to be carefully mounted to the telescope, so that the film will not be dented by any airlocks.

 

Photos of the Heritage 114P Equipped with Solar Filter

   

The euro EMC sun filter 600-105 is usable on the Heritage 114P telescope if you place the filter holders inside the tube

 

Telescope with euro EMC sun filter 600-105 in place

 

Photos of the Skymax-102 OTA Equipped with Solar Filter

   

Skymax-102 OTA with solar filter- side view

 

Ditto - from other side

Skymax-102 OTA with solar filter - rear view

 

Skymax-102 OTA with solar filter - front view

Skymax-102 OTA with solar filter - oblique side view

 

Ditto

Skymax-102 OTA with solar filter - detail

 

Ditto, somewhat closer

 

Links

 

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28.02.2017