Medium-wide fields 2020

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hhzhang
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Re: Medium-wide fields 2020

Post by hhzhang »

2020-Sept-17

Early morning saw thinning clouds and patches of clear skies, after nearly a week, finally.

The primary target was photometry of Mira which is fast approaching the peak brightness. Today's measurement points to m3.286. Will it hit <m3?

At the same time, the Mars is nearby and also approaching the great opposition. Nice moment to frame both beautiful objects.

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Another coincident scence is in Cancer the crab. Venus just passed the closest conjunction with M44 the Beehive.

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It was also the occasion to test my new toy of Sigma 50mmF1.4 Art lens.

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Finally, the Venus was rising up. Let's test the raw images out of my mobilephone.

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The clouds were very annoying, however. I then chose to shoot the zenith area, with the mobile phone resting still. Back home when I was stacking the photos, I learned one thing: the images could hardly be accurately stacked if not tracked-- apparently the phone camera lens suffers from distorations -- leading to nonlinear shifts of star images.

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Airconvent
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Re: Medium-wide fields 2020

Post by Airconvent »

Nice series of images, Zhang..:)
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hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
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Re: Medium-wide fields 2020

Post by hhzhang »

Airconvent wrote:
Thu Sep 17, 2020 10:59 pm
Nice series of images, Zhang..:)
Thanks!

Adding more data to the orion constellation image from Singapore. Work in progress.

Image

hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
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Re: Medium-wide fields 2020

Post by hhzhang »

Disappointed by the weatherafter 7PM today.
1. Sunset

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2.

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3 The moon

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hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
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Re: Medium-wide fields 2020

Post by hhzhang »

2020-9-20 Moon in HDR

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My first HDR image of Moon.
Last edited by hhzhang on Sun Sep 20, 2020 10:44 pm, edited 1 time in total.

hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Medium-wide fields 2020

Post by hhzhang »

Given the one cloudy night after another, I cannot miss the brief windows of clear skies at dusk. And probably the only object of interest is no other than the moon (and some planet).

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hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Medium-wide fields 2020

Post by hhzhang »

Never give in to the cloudy skies!

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hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Medium-wide fields 2020

Post by hhzhang »

2020-Sept-23

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A large of of the image is blown out by the shinning moon. Did a bit postprocessing to bring out some details and superimposed another picture of the moon itself.

Jupiter in the upper left corner. The tea-pot asterism of Sagitarrius is to the lower left. Many interesting galactic gems are present.

hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Medium-wide fields 2020

Post by hhzhang »

The moon, one day older.

Image

hhzhang
Posts: 306
Joined: Sun May 10, 2020 4:11 pm
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Re: Medium-wide fields 2020

Post by hhzhang »

Capricornous

Only two deep sky objects (both are globular clusters) are visible.

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