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IC1805 with ASI 294MM and Ha test

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#1 LYAstro

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Posted 08 October 2020 - 10:08 PM

IC1805

ASI294mm | Ha filter | 600s*1

taken by  Andrea Maggi

 

Antlia HA 3.5nm

QQ图片20201008223444.jpg


Edited by LYAstro, 09 October 2020 - 02:23 AM.


#2 sunnyday

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Posted 08 October 2020 - 10:10 PM

nice , thanks .



#3 LYAstro

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Posted 08 October 2020 - 10:14 PM

IC1805 with Antlia Ha 3.5nm by  Andrea Maggi

Sharpstar 76PH | ASI 294MM | Antlia Ha

6*600s

120997900_2691487401112455_746444554329984858_o.jpg


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#4 sunnyday

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Posted 08 October 2020 - 10:20 PM

IC1805 with Antlia Ha 3.5nm by  Andrea Maggi

Sharpstar 76PH | ASI 294MM | Antlia Ha

6*600s

attachicon.gif120997900_2691487401112455_746444554329984858_o.jpg

wow superb take , thanks .



#5 LYAstro

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Posted 08 October 2020 - 10:20 PM

 IC1805 with Antlia Ha/OIII 3.5nm by  Andrea Maggi
Sharpstar 76PH | ASI 294MM | Antlia Ha/OIII 3.5nm 
Ha 3.5nm 12*600s

OIII 3.5nm 12*600s

121009496_2691847871076408_7137136413421014955_o.jpg


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#6 LYAstro

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Posted 08 October 2020 - 10:25 PM

IC1805  Hubble palette with Antlia Ha/OIII/SII 3.5nm by  Andrea Maggi
Sharpstar 76PH | ASI 294MM | Antlia Ha/OIII/SII 3.5nm

12*600 sec HA
12*600 sec OIII
12*600 sec SII
121106516_2693671894227339_1732332177507887133_o.jpg


Edited by LYAstro, 09 October 2020 - 09:15 PM.

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#7 PirateMike

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Posted 08 October 2020 - 10:34 PM

IC1805

ASI294mm | Ha filter | 600s*1

taken by  Andrea Maggi

 

Facebook: https://www.facebook...f=page_internal

 

Antlia HA 3.5nm

attachicon.gifQQ图片20201008223444.jpg

 

attachicon.gifQQ图片20201008223449.jpg

 

attachicon.gifQQ图片20201008223452.jpg

So what is it that caused the lack of signal in the second image. Was it the different filter, the different camera or both?

 

If both filter and camera then how much difference did each one contribute?

 

 

Inquiring minds would like to know. smile.gif

 

 

Miguel   8-)

 

.


Edited by PirateMike, 08 October 2020 - 10:37 PM.


#8 PirateMike

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Posted 08 October 2020 - 10:40 PM

Here is my rendition from way back when.

 

https://www.astrobin.../full/xnr4io/B/

 

 

Miguel   8-)

 

 

.



#9 LYAstro

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Posted 08 October 2020 - 10:57 PM

So what is it that caused the lack of signal in the second image. Was it the different filter, the different camera or both?

 

If both filter and camera then how much difference did each one contribute?

 

 

Inquiring minds would like to know. smile.gif

 

 

Miguel   8-)

 

.

 The transmittance of the center Ha656.3nm will be a very big influence, and the cut-off rate outside the passband will affect the signal-to-noise ratio and contrast.


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#10 santafe retiree

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Posted 08 October 2020 - 11:00 PM

IC1805  Hubble palette with Antlia Ha/OIII/SII 3.5nm by  Andrea Maggi
Sharpstar 76PH | ASI 294MM | Antlia Ha/OIII/SII 3.5nm
attachicon.gif121145436_2693244014270127_9020323103502771134_o.jpg

Gain, offset, exposure length, sensor temp????


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#11 LYAstro

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Posted 08 October 2020 - 11:00 PM

Here is my rendition from way back when.

 

https://www.astrobin.../full/xnr4io/B/

 

 

Miguel   8-)

 

 

.

 

 You have taken a good picture, but this cannot be compared. Different telescopes, different cameras, and exposure time will affect the final image.


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#12 PirateMike

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Posted 08 October 2020 - 11:54 PM

 The transmittance of the center Ha656.3nm will be a very big influence, and the cut-off rate outside the passband will affect the signal-to-noise ratio and contrast.

And shooting with a OSC and an Ha filter would certainly be like riding a dead horse. Kind of like the second image.

 

 

Miguel   8-)

 

.


Edited by PirateMike, 08 October 2020 - 11:55 PM.


#13 PirateMike

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Posted 09 October 2020 - 12:15 AM

 You have taken a good picture, but this cannot be compared. Different telescopes, different cameras, and exposure time will affect the final image.

Thanks. It was one of my first images.

 

I was not trying to compare my image to anything, I just put it there like many of the other posters.

 

But your first post does seem to have the intention of comparing the two images, though you never state the reason for the post. If the reason that you posted the two images were to compare one to the other then I would have to say that the comparison is a little deceiving at the least.

 

The first image was taken with an Ha filter with a bandpass of 3.5nm and a mono camera.

 

The second image was taken with an Ha filter that has a bandpass of 6.5nm and shot with a bayered chip.

 

If you really wanted to do an apples to apples comparison then you should have changed only one variable. A good variable to change would have been the manufacturer of the filter, not the band pass nor the camera.

 

The scientific method used for comparison would most assuredly include just one variable being changed, not three.

 

 

So please, in order to help me understand why you started this thread, explain your reasons why you posted the two images. Was it to expand the knowledge of the members of the forum for their benefit, or just to deceive them into thinking that Antlia filters are the ones to buy?

 

 

 

 

Miguel   8-)

 

 

.


Edited by PirateMike, 09 October 2020 - 12:42 AM.


#14 LYAstro

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Posted 09 October 2020 - 02:28 AM

Thanks. It was one of my first images.

 

I was not trying to compare my image to anything, I just put it there like many of the other posters.

 

But your first post does seem to have the intention of comparing the two images, though you never state the reason for the post. If the reason that you posted the two images were to compare one to the other then I would have to say that the comparison is a little deceiving at the least.

 

The first image was taken with an Ha filter with a bandpass of 3.5nm and a mono camera.

 

The second image was taken with an Ha filter that has a bandpass of 6.5nm and shot with a bayered chip.

 

If you really wanted to do an apples to apples comparison then you should have changed only one variable. A good variable to change would have been the manufacturer of the filter, not the band pass nor the camera.

 

The scientific method used for comparison would most assuredly include just one variable being changed, not three.

 

 

So please, in order to help me understand why you started this thread, explain your reasons why you posted the two images. Was it to expand the knowledge of the members of the forum for their benefit, or just to deceive them into thinking that Antlia filters are the ones to buy?

 

 

 

 

Miguel   8-)

 

 

.

 I re-checked it. this is a non-rigorous comparison. I modified it. You are right. The comparison should have only one variable. This is my mistake. I'm sorry.


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#15 LYAstro

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Posted 09 October 2020 - 09:12 PM

Gain, offset, exposure length, sensor temp????

 12 Light 600 sec HA
12 Light 600 sec OIII
12 Light 600 sec SII



#16 santafe retiree

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Posted 09 October 2020 - 10:19 PM

 12 Light 600 sec HA
12 Light 600 sec OIII
12 Light 600 sec SII

Gain??? Offset??? Temp???



#17 LYAstro

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Posted 11 October 2020 - 11:01 PM

LYAstro - if you don't understand the question I am asking then you should not be selling these filters - or touting this camera mad.gif

 astrobin:IC 1805 Hubble palette

 This is the original picture taken by  Andrea Maggi, you can view it here.



#18 osbourne one-nil

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Posted 12 October 2020 - 07:34 AM

Perhaps a few people need to have a quick look at the TOS again, including the requirements to play nice and be polite. 

 

https://www.cloudyni...tion=boardrules



#19 santafe retiree

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Posted 12 October 2020 - 08:30 AM

 astrobin:IC 1805 Hubble palette

 This is the original picture taken by  Andrea Maggi, you can view it here.

LYAstro -- Again you are not providing the gain, offset or temp.  By not answering the relevant questions you are doing permanent damage to the reputation of the product you are trying to promote.  Perhaps the filters you are trying to sell are perfectly decent but given your original deceptive (now deleted) posts and now your repeated failures to answer the relevant questions, one is left with the impression that the filters are less than deserving of consideration -- let alone purchase.


Edited by santafe retiree, 12 October 2020 - 09:11 AM.


#20 PirateMike

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Posted 13 October 2020 - 12:42 PM

Where can I purchase an Antlia filter in the US? I would like to conduct my own comparison against my current Ha filters which include Astrodon, Chroma, Astronomics and ZWO.

 

I don't have an ASI 294 MM Pro, but I do have and ASI-16000MM and an ASI-183MM.

 

 

 

Miguel   8-)

 

 

 



#21 nicknacknock

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Posted 14 October 2020 - 03:40 AM

Gentlemen,

 

I bring to your attention the below from the Vendor Forum Rules:

 

The Vendor Forum is for the use of registered / tagged Vendors to post announcements of upcoming products, special sales and promotions, and any other information the vendor may feel is of use to the members of CN concerning their products or business. It is also for the use of members to post questions concerning said posts.

 

This forum is for vendors to create threads in per the forum guidelines and regular users can reply to those posts. Regular users are to use the appropriate main forums to create threads concerning any questions/issues/reports.

 

The vendor does not post the information on gain, offset or temp because the information is simply not available on the Astrobin photo page for the image shown here.

 

As to buying filters in the USA, here, here and here.

 

Kindly be civil and polite per the TOS and take into consideration the language barrier.




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