BIG gun (APM180 f/6 Achromat)

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pedro
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BIG gun (APM180 f/6 Achromat)

Post by pedro » Thu Dec 27, 2018 5:06 pm

BIG gun (APM180 f/6 Achromat)

Check out a APM180 mm F/6 Achromat I bought recently to image the Sun

Ohara/Japanese 180 mm F/6 lens (Achromat n.º 8) - 2-element Fraunhofer achromat FL = 1080mm
Oversized tube with full internal baffling rings (sliding dewshield)
Moonlite 2.5" dual rate Crayford focuser
Dual hinged mounting rings with dual attached 13" Vixen mounting plates
Finder mounting shoe (no finder or mounting rings)

ImageAPM180_F6_20181227_mosaic by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-001 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-003 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-006 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-008 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-021 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-030 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-036 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-038 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-042 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-049 by Pedro Ré, on Flickr

ImageAPM180_F6_20181227-055 by Pedro Ré, on Flickr

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Re: BIG gun (APM180 f/6 Achromat)

Post by Montana » Thu Dec 27, 2018 5:20 pm

That's a beast! we should have a picture with you for scale :)

I bet Father Christmas had a job to get that down the chimney :lol:

Alexandra

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pedro
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Re: BIG gun (APM180 f/6 Achromat)

Post by pedro » Thu Dec 27, 2018 5:23 pm

Thanks Alexandra

It was my birthday on the 24 and I got this nice present

Check out a picture with the OTA in a backpack (it weights only 11 kg).
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Re: BIG gun (APM180 f/6 Achromat)

Post by marktownley » Thu Dec 27, 2018 5:54 pm

Fantastic scope Pedro!
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Re: BIG gun (APM180 f/6 Achromat)

Post by Valery » Thu Dec 27, 2018 8:06 pm

Nice scope, Pedro! Congratulations. But... it probably need a nice ARIES Chromacor. No?


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"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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Re: BIG gun (APM180 f/6 Achromat)

Post by marktownley » Thu Dec 27, 2018 8:15 pm

It needs a nice big ERF Pedro. Be interesting to see how you get on with it in white light.
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Re: BIG gun (APM180 f/6 Achromat)

Post by pedro » Thu Dec 27, 2018 9:21 pm

I have a big ERF (165mm) and I had a Chromacor but I sold it recently

With narrowband filters it will be fine. My LUNT152 has an achromatic lens at it works fine in continuum

I tried it today and the chromatic aberration is present but it is not horrible

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Re: BIG gun (APM180 f/6 Achromat)

Post by ffellah » Thu Dec 27, 2018 9:44 pm

Nice new piece of equipment, Pedro. I can't wait to see what images it will produce. Happy Birthday ! In the last image you look like a proud father...

Franco


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Re: BIG gun (APM180 f/6 Achromat)

Post by MapleRidge » Thu Dec 27, 2018 11:06 pm

Hi Pedro...

The scope looks great and should make a great addition to your equipment portfolio.

Happy birthday as well ;)

Brian
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Re: BIG gun (APM180 f/6 Achromat)

Post by eroel » Fri Dec 28, 2018 12:07 am

Pedro:
Beautiful big gun and eyepieces. :shock:
Best regards,
Eric.


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Re: BIG gun (APM180 f/6 Achromat)

Post by FMEnage » Fri Dec 28, 2018 1:03 am

a very impressive refractor ! Pedro. Why does it have the "TMB" marking ?
-Mike

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Re: BIG gun (APM180 f/6 Achromat)

Post by Valery » Fri Dec 28, 2018 2:08 am

Such a fast beast requires special Chromacor which will work at F/6. I got such one - it worked kust fine with my 150mm F/5 scope and it shows either white moon and Jupiter. I never think to sell it before. But now I am getting older and I completely lost interest to night astronomy.
Also a 185mm DERF is waiting for a beast like this . :) My next refractor will be 10" F/6 Fluorite and so, this DERF is seeking a nice home. It is a classic Schott RG630 glass with IR cut coating. Quite rare glass in such a size.
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Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

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Re: BIG gun (APM180 f/6 Achromat)

Post by pedro » Fri Dec 28, 2018 9:03 am

It was made my Markus Ludes and this is the reason why it has the TMB logo

I know that at least eight 180mm F/6 were made (mine is number 8)
Last edited by pedro on Fri Dec 28, 2018 10:08 am, edited 1 time in total.

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Re: BIG gun (APM180 f/6 Achromat)

Post by pedro » Fri Dec 28, 2018 9:07 am

Valery

My chromacor was used with a Synta 150mm F/8 and it was great

http://www.astrosurf.com/re/chromacor.html

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Re: BIG gun (APM180 f/6 Achromat)

Post by Christopher » Fri Dec 28, 2018 10:31 pm

Congrats on the light cannon and happy birthday. I have that same mount. How much does the 180 weigh?
Christopher

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Re: BIG gun (APM180 f/6 Achromat)

Post by Carbon60 » Sat Dec 29, 2018 7:45 am

Nice birthday present, Pedro. Congrats on a lovely new acquisition. It will be interesting to see how it performs.

Stu.
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