New Era of Space Program

•June 2, 2020 • Leave a Comment

Congratulations to SpacerX, NASA and the entire America! It was the wonderful collaboration drama between SpaceX and NASA.

Saturday’s success reminded me of long long time ago’s Appolo space program and America’s glorious era when I was a teenager in Japan. America looked so bright, big and shining for me that time while Japan was so poor.

SpaceX’s booster engine looked very impressive. Launching looked very efficient, fast  and smooth. Probably compact and lightweight?? So what I thought myself is SapceX is  the crew ship while Japan’s HTV continuously tasks as cargoship to ISS.  I saw “Kounotori” JAXA’s cargo unit was there (if I’m correct) at one of docking sections, whcih arrived at ISS several days ago . Probably unloading new stuff now and will be loading the waste back to the earth. JAXA’s Kounotori might not be seen at bright spot. But very important supporting player to continue ISS project too.

And a lot of cameras anywhere including ISS. And high quality live video. I didn’t feel it was coming from the space. It was very enjoyable as the entertainment too. And various remote sensing technology. That’s great to see as well.

If someone missed the entire trip to ISS, see YouTube video. I linked them for quick review myself too.

During the interview, one of high ranking persons mentioned the future plan which was going to the Moon and the Mars. USA might have the hard time at this moment. But I really wish America to re-build such a glorious era again. Let’s unite and re-work hard.

BTW, this is an another my favorite movie which describes happy American day. What a big car!!

No smartphone, no PC game. But they must have been happy.



Users’ Astro Images

•May 30, 2020 • Leave a Comment

These are taken by the long-time Hutech royal customers.

1- M8/M20 mosaic taken with AP155 and IDAS NB2 by Klaus Brasch

M8 M20 pano HDR AP155 f5 NB May25_20

I recently acquired a new imaging aid, an IDAS NB-2, nebula boost filter. It selectively transmits H-alpha (red) and Oxygen III (blue) wavelengths, making it optimal for emission nebulae and very effectively suppressing most light pollution. Coupled with my Hutech modified Canon 6D mark II, it records intensive reds and blues at greatly reduces exposure times. This mosaic of three of the Milky Way’s most spectacular star-forming regions in the constellation of Sagittarius, Messier 8, the Lagoon Nebula, the compact Messier 20, the Triffid Nebula, with a blue halo around it, and on the left, NGC 6559, a dimmer nebula associated with a larger, multi-lobed star forming complex. All these objects are between 4,100 and 5,000 light years away from us; quite close by astronomical standards. This composite was taken with an AP-155 refractor shooting at F/5.2, at ISO 3200, for a total of about 20 minutes. Be well, Klaus


Really great shot! Klaus. Beautiful color contrast and details. Thanks for your quick feedback with a newly-acquired filter.

If someone wish to isolate OIII from Hb, NB2 should be good choice. This filter is carefully designed to work with up to F2 optics. Unlike other narrowband filters, IDAS NB-series’ moderate bandpass and flat-top shape minimizes losing the emission signals due to the spectrum shift occured by fast optics.

2- Followings are taken by Dave Kodama, one of my club members. He used NGS1 with a modified RP. And classic BORG 100ED. He is 1st BORG customer when I began carrying BORG telescopes as a distributor. and this 100ED designed for large format film was 1st scope into US almost 20 years ago?? He is still using!! Thanks, Dave.





If someone who own modified consumer cameras are looking for the filter to neutralize the background color as well as suppressing light pollutions – both man-made and natural glows. NGS1 is perfect. See my comparison tests under the sky of bortle 7.

More details for NGS1 and the natural glows are

NGS1 is really nice filter. This is my default base filter both at my backyard as well as dark site.

Klaus and Dave, thanks for sharing with your nice shots. More enjoy astro imaging with IDAS filters.









Scopetech Mount ZERO – #4

•May 28, 2020 • Leave a Comment

This should be the series final.

Feature #4 : user-friendly


At the bottom. Thanks to Scopetech. One bushing is pre-set aside as free. 


Scope clamp section

Takahashi-standard 35mm separation thread holes give us various options – another clamps or Takahashi clamshell holders.


With Losmandy double-duty clamp

Scopetech Mount ZERO – #3 & High Magnification Test

•May 26, 2020 • Leave a Comment

Feature 3 : Super solid and lightweight arms, carefully analyzed and designed in CAE to achieve both lightweight and strength. 77945255f1d640295e4e1ab6d42e98f4

As a resutl, CAE process allows to figure out 1.4kg body weight and 7 kg payload. zero7

My favorite setup with Sightron Japan’s carbon fiber tripod. Yes, my important factors are lightweight and solid. Heavy and solid is not my choice.


And last night I did the high magnification test with the mount. BORG 90FL with Vixen HF2.4mm gave me 208x. I believed before this was a motorized mount territory. But I realized it wasn’t. Flexible cables allows me to easilly keep tracking manually. Also since the mount minimizes the shaking during focus, I could comfortably control focusing. Nothing annoyed. Now I’m asking myself “do I need a motorized mount even for planetary viewing?”. My next test will be with BINO setup. If the mount can handle, this is my ultimate goal.


The Sky of Southern Hemisphere

•May 24, 2020 • Leave a Comment

This is my un-experienced territory. Troy Casswell in Australia sent his beautiful shots.  He is using IDAS HEUIBII and NB1 filters. What gorgeous sky! I just sigh……..

His comment:

I have attached some images taken using your filters. You can use them on you website if you like. All shots taken with HEUIB-II except the Carina Nebula (Nebula Booster – NB1).

More shots on my FB page:

Thanks for sharing with us, Troy!


Scopetech Mount Zero #2

•May 23, 2020 • 4 Comments

Feature #2 : Friction and slow motion controls


Each axis has ball bearing, and worm gear and wheel. This is not a simple clutch. So no need to tighten/loosen once the friction is set. See a video. Free stop and ready to use slow motion controls. Convenient! 


As shown in video, I can say the backlash-free feeling movement. So no stress even we try to move back and forth. 

I tried to use last night. Steady and smooth. Very nice. And essential companions for old-fashioned star-hopping are constellation binoculars [Hinode] and map. Hinode is an another Scopetech product. 


With Hinode binocular and map.


I will enjoy with this system for pleasing summer nights. 

I also find out the product review video prepared by one of Japanese users. It is interesting to see his vibration comparison between Zero and Vixen Porta. 

His is much nicer video. Enjoy it!~~


Classical Astronomy from Japan – Mount ZERO

•May 22, 2020 • Leave a Comment

The electronics and computer technology made our life quite easier , faster and more convenient. It does for our astronomy too. GOTO function must be one of most typical things. That’s good. I really appreciate that.

Meanwhile, we can enjoy the time-consuming process as the hobby. So the machine’s fast GOTO vs the human’s slow star-hopping.

Japan’s craftsmanship group – Scopetech introduces the unique single fork mount called “ZERO”. They remind us of the old astronomy.

ZERO=MU(無)=nothing. In ZEN(禅) sprit, we are asked to keep our mind MU(無) and to be fresh. Scopetech did. Single fork mount is nothing new. But they carefully reviewed all of aspects and newly designed from the scratch to make the best possible portable single fork mount. The concept is lightweight, solid and user-friendly.

The mount has several unique features. Too much for one page to desribe. So I want to write up little by little.

Feature 1 : Hirth Joint

This famous and probably costly coupling method achieves both rigidness and flexibility.

Hirth joint allows to adjust the angle at 10-degree increnment while maintaining the rigidness

And an extra benefit is the tranport-friendly size and shape when packed down.

240mm x 100mm x 110mm / 1.4kg

The mount ZERO is available now at $375.00

Scopetech reminds us of enjoying the human-oriented old-fashioned way. More details will be continued. Stay tuned!

Eagle 3 with BORG 90FL F3.9ED

•May 20, 2020 • 1 Comment

I totally forgot I had Eagle 3 I bought more than one year ago. I’ve never powered on even once.  The computer is getting obsolete day by day. So I feel now “don’t be too late to enjoy the invenstment!” I start building up with BORG 90FL.


Eagle 3 gives me various attachment options as the accessory tray at the top. I like that. Since it is Italian design, all are metric threads. So I didn’t have right size and shape bolts. Somehow setup temporarily.


The end of the scope is M68.8. BF is 80.0mm from this point. So a plenty of room for most of camera configurations including OAG setup.

Their power connectors and cables are robust. This should completely eliminate the power connection issues. Well-done!

BORG 107FL Bino

•May 19, 2020 • Leave a Comment

This 107FL Bino is for Marcus Zengi in Germany. He built-up himself.


His system features are

  • FTF 2″ lightweight version
  • Inter-pupillary adjustment by the helical mechanism made by Matsumoto san. So OTAs can be completely fixed.
  • Naturally the mechanial structure is simple, and relatively lightweight.


Very nice! now he is planning to upgrade to FTF 3″ and Series 115 tubes. That should be the ideal setup. I’m looking forward to completing your project shortly, Marcus.



•May 18, 2020 • Leave a Comment

This is an another common question on the sytem configruation of ASI6200/CFW/M68 OAG + BORG 107FL F3.9ED.  So I wanted to write up here for my record too.

According to ZWO site, the total light path including a tilt adapter is 55.0mm. But this doesn’t includes the refraction of a filter glass.


According to AstroDon specs, they use the fused silica, So the refractive index is 1.46. Their thickness is 3.0mm. This makes the light path change 0.94mm shorter.

Meanwhile BORG’s BF is 80.0mm from M68.8 point. So if you use AstroDon 3.0mm filter (probably Chroma 3.0mm should be same), you need a following adapter

  • M68.8/P0.75 male
  • M68.0/P0.75 male
  • 25.94mm light path

Then, this should be optically perfect. But a tilt adapter must easily affects the optical distance. So I’m not sure how much accuracy is needed at realistic standpoint anyway.

Other brand filter has to be re-calculated based on the thickness and its refractive index if different.

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