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Mercury transit 2019: these products will turn the transit into an experience

Marcus Schenk

of astroshop.eu

We only see a Mercury transit every 3.5 to 13 years. On 11 November 2019 this rare event will take place once more. An inferior conjunction occurs as Mercury crosses in front of the Sun and we can observe this in broad daylight. Don’t miss the astronomical highlight of the year! But what do you need to observe it? With the following products you will be well prepared for a successful sighting.

Warning: never look directly at the Sun without a suitable filter. A solar filter is always required for observing.

Solar filter film  

The Baader AstroSolar solar filter film is available in various sizes, it is effective and very good value. Use the film to make your own solar filter which you can then attach to the front of your telescope.

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Mounted solar filter

Is do-it-yourself not really your thing? Then a ready-mounted filter is the perfect solution for you. The Omegon filters for smaller telescopes or the Baader ASTF filters are good value and are available for many sizes of telescopes. You simply choose the diameter that suits your telescope and attach the filter to the front of your telescope. Before long you will be safely looking at the Sun and discovering sunspots – and of course Mercury.

Tip: to be certain which filter will fit your telescope, measure the outer diameter of your tube before making your selection.

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Solar filter for binoculars and cameras

You can also follow the Mercury transit with binoculars. Just by attaching two normal solar filters? This works particularly well with the AstroSolar binocular filter.  They are laterally cut in such a way that they don’t make contact even with objective lenses that are very close together. This is also an advantage for DSLR cameras: the flattened filter edges makes it possible to attach a camera flush to a telescope or a mounting plate.

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Herschel wedge

Even more contrast is on offer from the professional for solar observing: a Herschel wedge. Combined with a ND3.0 filter it can be connected to a refracting telescope. The advantage: you see the Sun in front of a black background, and the granulation and sunspots appear in unimagined levels of detail.

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H-alpha telescope

You will experience a bit of the action when  observing the Sun in H-alpha light. In a very narrow, deep-red band with a wavelength of 656nm you can observe a very active Sun. Prominences flare millions of kilometers into space and are changing rapidly. Even when you see no sunspots on the Sun, there is almost always something to see.

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Mercury transit T-Shirt

For huge fans of astronomy: show your passion for astronomy with the new Mercury transit T-shirt. It shows the progress of the transit with all the important information and timings. So anyone can look to see when Mercury will appear in front of the Sun, or how long we still need to wait until the next transit.

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Smartphone adapter

Photographing the Sun swiftly and simply: with a smartphone adapter you can quickly take beautiful pictures of the Mercury transit. It works really well with small telescopes. Simply attach the Omegon smartphone adapter to your eyepiece, and soon you will be capturing these astronomical moments for ever.

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Omegon 70/400 Backpack with solar filter

If you are looking for a small travel solar telescope, then the Omegon Backpack 70/400 AZ is perfect. The set includes a finder scope, mirror star-diagonal, eyepieces and of course the appropriate solar filter. You get all of this together in a practical rucksack.

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Finding the Sun made easy

Sometimes its hard to believe how hard it can be to find the Sun with a telescope without spending a lot of time searching for it. Finding it is much easier with the Geoptik 1.25’’ solar finder.

Simply attach the sun finder to your focuser and right away you can centre the Sun over your mount’s axes. The Euro EMC solar finder offers an alternative way of finding the Sun. It consists of a pinhole and a small screen onto which a small image of the sun is projected. Simply attach the finder to your tube using the Velcro straps included.

Celestron RASA Astrographs: Telescopes for Astrophotography

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The RASA range of telescopes were developed specifically and exclusively for astrophotography. They are very fast; with a focal length of f/2 they take pictures twenty times faster than a Schmidt-Cassegrain lens at f/10! Because of this a tracking control is not required, and generally fewer demands are placed on the mount.

The RASA 1100 model with a 279 millimetre aperture has already been on the market for some time, and Celestron is now also offering a smaller version, the RASA 800, with a 203 millimetre aperture.

RASA 1100

RASA 800

The abbreviation RASA stands for the developers’ names: Rowe-Ackermann-Schmidt-Astrograph. It is basically a normal, routinely-produced Celestron Schmidt-Cassegrain instrument; that is with a spherical primary mirror in front of which is a corrector plate invented by Bernhard Schmidt. Instead of using a secondary mirror to direct the light path towards the Cassegrain focus at the end of the telescope, the camera sensor is incorporated in the prime focus. A corrector assembly comprising four lenses made of especially high-quality glass ensures optimal illumination.

The RASA telescope from Celestron

The RASA telescope from Celestron

As the term astrograph implies, RASA telescopes are designed exclusively for photography. There is no option to use an eyepiece. But if you are an amateur astronomer who specialises in astrophotography, you will not see this as a disadvantage, instead you will quickly learn to appreciate the advantages of the RASA telescopes.

Astroshop: Solar promotion: telescopes and filters on special offer!

We are offering you – only while stocks last – the following telescopes and filters for solar observation at a very reasonable price:

CLICK ON IMAGES TO SEE MORE…..

DayStar SolarScout solar telescope ST 80/1400 carbon fibre H-alpha Prominence

Now only EUR 1,695. You save EUR 735!

This solar telescope is equipped with a QUARK H-alpha filter. What’s special about it: you can remove the QUARK filter in order to use it with another eyepiece! Lightweight carbon fibre tube to keep weight to a minimum. You don’t need an expensive astronomical mount.

Solarscope UK SolarView-50 solar telescope ST 50/400 OTA

Now only EUR 3,630. You save EUR 2,110!

Unlike other H-alpha telescopes, the Solarview has no central obstruction which ensures higher contrast. The result is that larger solar telescopes from other manufacturers which cost just as much or even more cannot offer anything like the same sharpness and contrast as the Solarview.


Various H-alpha filters from Coronado from the SolarMax II range

for only EUR 3,890. You save EUR 1010


Coronado SolarMax II Etalon 90mm with BF15 Blocking Filter

for only EUR 3,090. You save EUR 800!


Coronado SolarMax II Etalon 60mm with BF30 Blocking Filter

for only EUR 2,450. You save EUR 640


Coronado SolarMax II Etalon 40mm with BF15 Blocking Filter


Coronado SolarMax II Etalon 40mm with BF10 Blocking Filter

for only EUR 1,080. You save EUR 310


Coronado SolarMax II Etalon 40mm with BF5 Blocking Filter

for only EUR 990. You save EUR 400


Other accessories for solar observation

Lunt Solar Systems LS 50F Ha H-alpha filter set for 1800mm

for only EUR 2,630. You save EUR 560


Lunt Solar Systems solar filter H-alpha 50mm Double Stack

for only EUR 1,195. You save EUR 400


DayStar E-120N100 Energy Rejection Filter

for only EUR 495. You save EUR 211


Coronado BF 10mm 1,25″ blocking filter

for only EUR 459. You save EUR 240


Coronado BF 5mm 1,25″ blocking filter

for only EUR 459


Lunt Solar Systems BF 6mm 2″ blocking filter

for only EUR 420. You save EUR 135

All items are brand new! The offer is only valid while stocks last