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Full Moon DSLR test Baader Ha 3.5nm


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Title says it all;

41 x 5min subs, iso 1600, Nikon D810A, Star 71, Baader 3.5nm Ha, no callibration.

Extracted only the Red channel and processed only that one, avoiding noise injection caused by debayer.

Advantage of a 36 MP camera is that you still end up with decent resolution following this procedure, one can always drizzle if needed.

20193524456_6d1958d94d_b.jpgNGC7000 Ha by Yves, on Flickr

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At this time of year many members of the DS imaging community are hibernating. Down here at Lat 44 we are not doing so, of course. We are wide awake and paying attention!

This is one of the most remarkable DS images ever posted on SGL. It isn't the best NAM we've seen, but it is very, very good. What is remarkable is that it was taken with a DSLR (albeit a very expensive one), in Ha, and, above all, with a telescope costing HOW MUCH? Folks, this is a 35mm full format chip and here we have reasonable stars to the edge in a scope costing... (and now you'll have to look up the Star 71 price yourselves because here the net has slowed to a near standstill!) but it ain't expensive.

I hope people are looking at this image. I know Yves is buzzed by the camera but it's the scope that is knocking me out just now. But let's not fight over that. This is new technology doing remarkable things. We should all be looking.

Olly

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...

This is one of the most remarkable DS images ever posted on SGL. It isn't the best NAM we've seen, but it is very, very good. What is remarkable is that it was taken with a DSLR (albeit a very expensive one), in Ha, and, above all, with a telescope costing HOW MUCH? Folks, this is a 35mm full format chip and here we have reasonable stars to the edge in a scope costing... (and now you'll have to look up the Star 71 price yourselves because here the net has slowed to a near standstill!) but it ain't expensive.

I hope people are looking at this image. I know Yves is buzzed by the camera but it's the scope that is knocking me out just now. But let's not fight over that. This is new technology doing remarkable things. We should all be looking.

Olly

The cost at FLO is £949.   Only last night, I persuaded the missus to let me have one of these Takahashi Baby Q thing-a-ma-boabs (and you have no idea what I had to go through to get the green light!!!).  

Do I need to rethink?

Steve M

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The Baby Q is an excellent telescope, but it will not cover a full frame chip, only APS, if that is your goal, I would go for the BQ, FF you need a 106 ...

The downside of the WO Star 71, and to s lesser extend the TS version is that stars can have spikes ... but the FOV is amazing.

Weird thing is I don't have always spikes, so it could be Temp related ...

Best value for money it is without any hesitation!

/Yves

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The Baby Q is an excellent telescope, but it will not cover a full frame chip, only APS, if that is your goal, I would go for the BQ, FF you need a 106 ...

The downside of the WO Star 71, and to s lesser extend the TS version is that stars can have spikes ... but the FOV is amazing.

Weird thing is I don't have always spikes, so it could be Temp related ...

Best value for money it is without any hesitation!

/Yves

No I don't have FF - I have an Atik 383L.

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The spikes are odd. Maybe a very slight stop-down mask of just a couple of mm would fix it. Don't laugh, but are you certain you are not imaging through an overhead cable or other obstruction at some points from your site?

I agree with Yves' comparison and recommendations regarding the two scopes. But hats off the Star 71.

Olly

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Alas, this isn't a 1000D...

Olly

Of course not Olly!, I did not buy the 1000d, but the 1100d And that's a huge difference:-) All kidding aside, it should be possible to produce a fairly good image with a less expensive camera and a ha filter. Any experience on this? I'ts an interesting thought.

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The spikes are odd. Maybe a very slight stop-down mask of just a couple of mm would fix it. Don't laugh, but are you certain you are not imaging through an overhead cable or other obstruction at some points from your site?

I agree with Yves' comparison and recommendations regarding the two scopes. But hats off the Star 71.

Olly

Hi Olly, some Star 71 users have just done that, 3D printed a stop down mask and away are the spikes ...

What's funny though most of the time I don't have them, but sometimes they are there ...

I guess, when my camera is perpendicular it's not there, or temperature is correct so optics are not pinched or so ...

/Yves

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I think this is the first image I've seen created by the Astro specific Nikon.  Wasn't this camera just released into the wild this year?  The size of these subs would really tax a mere mortals data storage system.  Was the camera run through a capture program?  How did you extract only the red pixels?  I was finally able to view this on my desktop monitor (vs a tablet) and it is just wonderful.

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So this image is captured with Bakyard Nikon, a beta version that should be available pretty soon. In the past I used the build in interval meter.

I did not debayer the image but I did split the CFA channels RGGB with splitCFA routine in PI channel zero is red ...

For more pictures of the D810A look at;

https://www.flickr.com/photos/130138181@N02/

look at description for camera and capture data.

/Yves

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