What is the quality issue with these photos ? Can someone help ?

[abhays89806282]

Hi,
I uploaded few images to adobe stock but got rejected due to quality issue. Can someone help me understand the specific issue with these photos ?
Photos are in the attachments.

[RALPH_L]

First of all, your signature is not allowed. Your photos show no specific subject. The comet, for insrtance, is way to small. The exposure are also off.

[abhays89806282]

Understood the signature part. About the comet, If i remove "comet" from the title, hope it will be accepted.

[Test Screen Name]

If you remove "comet" from the title, the image will be rejected because
(1) of the comet, which is not an expected feature in a perfect picture

(2) what's left without the comet seems like a random unfocussed view of the sky.

Astronomical photography is very specialist and tends to use big telescopes.

[ricky336]

The comet won't be accepted as it doesn't meet the quality requirements. The comet is exceedingly small!

[ricky336]

Hello,

Sorry, but these photos are not that good, will definitely not meet Adobe's quality standards!

Focus, exposure, composition... quite a lot really😒

Have a read of this from Adobe about how to create better photos to get you started!
https://helpx.adobe.com/stock/how-to/tips-stock-image-acceptance.html?set=stock--fundamentals--adobe...

Contributor handbook
https://stock.adobe.com/pages/artisthub/pdf/contributor-handbook-2022.pdf

[Test Screen Name]

Oh, and by the way I'd be very proud if I'd managed to photograph a comet. It's a great memory, but it isn't world class stock photography.

[Abambo]

The histogram from "Comet" shows clearly an ill exposed image with both, the blacks (and shadows) and the whites missing.

In addition, despite you having posted PNG files (why?), it is full of artefacts:

Night sky, as well as comet has this dark blobs in the image.

and compression artefacts on a PNG file should not be…

The histogram shows a highly underexposed picture.

Your last picture is as bad as the first two:

[Jill_C]

I agree with the other comments posted here. There is no sales potential for noisy, unfocused images - of any subject. Keep in mind that Adobe Stock databases already contain 11.6 million sunset images. Yours would have to be unique and technically perfect to be accepted or ever sold. 

[Abambo]

Yours would have to be unique and technically perfect to be accepted or ever sold. 

By @Jill_C

Technically correct to be accepted and unique to be sold.