HyperStar & Planetary Nebula with IDAS NB1 Filter

•February 18, 2019 • Leave a Comment

1- Everyone knows Starizona HyperStar is a great optics. I was very curious how IDAS NB1 filter worked with it because of super fast optical design.


Starizona tested (thank you!) and I was told it was very positive feedback from them. In fact, HyperStar owners are choosing NB1 filter every day. So if you are current HyperStar owners and looking for the tri-color narrowband filter suitable for your optics, this is it!! Contact Starizona or their dealers for more details and for ordering. You should enjoy imaging without the optical distortion entire your image sensors.

This is the filter for HyperStar users. Thanks to the IDAS who designed the filter performance for this kind of super fast optics.

2- Following Steven Bellavia’s image (thank you, Steven) gave me a hint of my next target through NB-1 filter. Yes, planetary nebula. I realized it was the best targets with NB-1 (passing Ha and OIII) until the summer milky way will come up to the sky. Believe or not, I’ve never pointed the scope to the planetary nebulae, shame……. So I’m not familiar with what planetary nebulae are up there these a couple of months.

Let me know what there are up the sky and also share your image results taken through NB-1 filter here at my blog. Especially I’d like to share several imaging data thru NB1 with everyone here like

  • Camera model
  • WB (R and B values)
  • Image capture software

These data should be very helpful to the users who start tri-color narrowband imaging with OSC cameras like me.

IDAS suggested following pre-sets for me.

  • ASI183MC
  • R96/B88
  • SharpCap.

Thank you, Ixy!. If anyone has the data with NB1 including other OSC cameras, let us share here.

3- I don’t hesitate to describe him the most serious and patient BORG user – Steven Bellavia sent me his new image taken in extremely cold condition.


Beautiful color! Although he is shooting a monochrome camera, I wish I can go similar with ASI183MC and NB1. Your image encourages me to try it out. Thanks again, Steven. I don’t have long focal length of the scope. But I hope ASI183MC’s small pixel makes up for the lack of focal length. Anyway, let’s try and see.



BORG 55FL F3.6 & ASI183MC

•February 15, 2019 • Leave a Comment

This becomes one of my most favorite systems at this moment. Easy to carry and setup. Basically the mount is Takahashi(PM-1X) and Skywatcher COMBO. Good thing for Skywatcher unit is to have a slow motion control. Everything is packed in compact, And superb quality mechanically and optically.


As mentioned earlier, I originally picked ASI183MC for small galaxies. Yes, still so. But after I took Rosette, I thought I might be able to find out other suitable nebulae. Thanks for 200mm focal length. There were. Followings are some targets I quickly found. M45 might be in. Looks a bit tight though.

Whenever summer milky way will be coming up, I will try to point to M8 and M20. I’m surprised to know this small sensor covers both M8 and M20 in one frame. I had the another enjoyable way with this camera. The camera turns now more valuable than I expected. 2.4 micron pixel should be good match with 55FL image sharpness and focal length.

PS. Witch head is perfect too!



•February 14, 2019 • Leave a Comment

Canon 2nd full-frame mirrorless camera has been introduced at very affordable price!!


Hutech offers two different modification options.

  • Regular built-in Canon-made UV/IR blocking filter (*)
  • No-filter (requires one of IDAS body-mounted filters)

* Planned. We need to verify.

Above both options are precisely set at the original Canon optical distance. So no back focus issue for both of them. No-filter body turns ideal when IDAS filter is in place.

The advantages for mirrorless camera are

  • Yes, no mirror – good bye mirror or mirror box shadows
  • Short flange back – gives us more options to set astronomical filters between lens and body
  • More compact and lighter (280g lighter than 6D Mark II body)

And here is the Hutech offer.



ASI183MC thru IDAS Nebula Booster NB1 Filter

•February 13, 2019 • 2 Comments

I think the camera I got was probably 2 years ago. But I think this was 3rd attempt. I found the Rosette is the best size for BORG 55FL F3.6 (200mm f.l.) and ASI 183MC small sensor. Here is the result at my backyard under the moon.  Background gradation doesn’t good because I didn’t take the flat. Anyway this is just my start as a beginner. IDAS NB1 filter suppressed the sky glow as expected.


IDAS NB1-52 + BORG 55FL F3.6 + ASI183MC, 14 x 4′

Now I’m searching around the good-looking (at least to me) debayering algorithm from OSC camera. I wish to use Adobe Camera RAW for astro camera as well some day. I don’t think it will happen though.

I picked this camera for small galaxies. But I figure out 200mm f.l. looks giving me some other attractive large targets.

I don’t remember the exposure time during focusing thru the Bahtinov mask.  But at least it wasn’t the inconvenient level at all. Larger aperture should give us much shorter. Anyway, focusing was easy.

IDAS HEUIBII-48 & Fuji X-T1 thru IDAS NB-1

•February 12, 2019 • Leave a Comment

1- IDAS HEUIBII filter is well known as the perfect UV/IR blocking filter for modified DSLR cameras. It allows to neutralize the background color (generally red cast because of modd)  while isolating faint Ha emission from the background. RGB are perfectly matched like the magic.

Fred, please allow me to use your yesterday’s image as our case study. Here is his image taken with modified cooled 6D and HEUIBII filter.


I’m sure Fred owns various filters. But I’m sure he intentionally picked HEUIBII for this specific target among them. I didn’t ask. But I’m sure he did so.

  1. If we use Ha passband filter, yes we can get high contrast Ha image. But instead most likely we lose reflection nebula signal.
  2. If we use a conventional UV/IR filter, we can capture both emission and reflection sections. But the background color is overwhelmed by red cast because of modified camera. So faint Ha emission is mixed with the background color. It’s hard to isolate from that kind of RAW image in post-processing (at least for me).

So this is the perfect target for HEUIBII filter to capture both different type of nebula while neutralizing the background color.

HEUIBII filter has been discontinued and 48mm was sold out once. But because of continuous demand, IDAS decided to reproduce the limited numbers only for 48mm size. Half portion of new production has been already reserved for some dealers and the half is still open.

If you plan to continue to use modified camera long time and don’t own HEUIBII yet, this is the last chance to get. In my personal opinion, as long as we use modified camera, this filter should be quite useful in our lifetime span. Other sizes including body-mounted types are still available too.

The response curves was carefully calculated and designed while considering matching RGB ratio for modified camera. Well designed!! Nothing obsolete.

2- Last night, I tried some tests. The moon was up there. But winter milky way is going down and down to the west. No time to wait.


One test was how NB-1 filter worked with a stocked camera, especially Fuji X-T1. Personally I was very curious about that. I set a filter between X-T1 and Sigma 150mm(Canon EF interface). This is the result.

xt1m42Actually I decreased the color saturation even in above image. Still looks too vivid. The original was color-saturated very much. This was unguided 4 minutes exposure each. Completely washed out in M42 core. This was the 1st test shot to see the color reproduction and proper exposure time anyway. I wished to see without the moon light to conclude though.

Keep in mind, this shot was taken under half moon and light polluted sky condition. So it  encourages me to re-try without the moon. Because of moonlight, RAW image was way greenish. But I didn’t feel bad at all.

So I highly recommend a stocked Fuji users to use NB-1 filter to create high contrast nebula finish. (I’m not sure their conventional bayer-sensor camera though. Probably still same) At least X-trans sensor looks good matching.

Takahashi PM-SP Ted Special II & Witch Head Nebula

•February 11, 2019 • Leave a Comment

1- Now Takahashi PM-SP Ted special II is on sale.


2- One of Hutech Royal customers – Fred Eiserling fortunately escaped the raining southern California during the new moon period and looks having very good time in Baja California under clear sky. (I envy…..)


Attached is my image of the Witch Head Nebula-IC2118. Made February 5,2019, 
10PM PST from Baja California.
Borg 55FL f3.6 with IDAS HEUIB-II, Hutech cooled Canon6D at -6 Celsius, 
ISO3200, 10x 5minutes, combined in
Registar and processed with Photoshop CC.

Congratulations, Fred! Great Witch head!! and thanks for sending your new image.

IDAS NB-1 First Light

•February 8, 2019 • Leave a Comment

Chris at OPT shared his 1st shot through IDAS NB1 filter.

Seagull Nebula - Hutech Nebula Boost filter

Image Data

StellarVue SV70T at f/4.8

ZWO ASI1600MC-P color camera

IDAS NB-1 Nebula Boost filter

Guided with ZWO ASI120 MINI and QHY 30mm mini guidescope


24 x 5 min at -20C, Gain = 80, acquired in MaxIm DL 6

Processed in MaxIm DL and PS CC.


Taken from a spot near Blue Jay Campground off Ortega Highway.

Great shot!, Thank you, Chris. For any question or purchase , please contact Chris at OPT. They have NB-1 in stock right now.


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