Benjamin ROGER's astronomy site

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I sold my EM200/C9 to buy a dobson Mag1 Portaball 14.5". In fact, I realized I had no more time (and motivation) to do imaging.

So I bought this telescope in Florida, US in second hand. I received it extremely well pack, mint condition.

And to complete it, I bought a Denkmeier standard reflector package with X powerswitch (I recommand it on the denk), a 24mm Panoptics pair and a 12.5" Kasai ortho pair. For the book, I get the night observer's guide. Ready to go !

Ancien materiel

OTA : Celestron C9.25 (235 mm) still january 2000

Mount : Takahashi EM-200

Webcam vesta pro modified.

Homemade autoguider

Homemade electric focuser

Scope guide: Rubinar 100/1000

Soft : IRIS

Location : Lille, north of France (50,62°;3,12°)

 

     
Astronomy is an hobby since 1989, I beginning with a little perl 115/900. I quickly decided to build a Pierre Bourge T200. But like I live now in a city, I needed a more portable telescope and I bought a Celestron C9 with a Losmandy GM8. The GM8 was a good mount for the price but I wanted a more stable mount and I recently bought in second hand a Takahashi EM-200. Great improvement, more stable, lower periodic error, higher load capability.

Like many astronomers, I use a vesta pro webcam, very useful for planetary images and now for the deep sky (It's easy to modified a vesta to use it with long pose). No so good than a true CCD camera but a good thing to discovered the deep sky CCD technics.

 

  Astronome amateur depuis 1989, j'ai débuté l'astronomie avec un télescope Perl 115/900. Puis j'ai construit un T200 de type Pierre Bourge. En 2000, habitant désormais en ville, j'ai acheté un télescope plus compact et transportable, un celestron C9.25 sur une monture Losmandy GM8. Depuis janvier 2004, j'ai remplacé la GM8 par une Takahashi EM-200, plus stable, plus précise.

J'utilise comme beaucoup d'astronome amateur une webcam vesta pro, incontournable pour le planétaire, je l'utlise également en ciel profond après l'avoir modifié pour les poses longues.

 

Takahashi EM200 periodic error  (+- 4" arc) :