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Old 03-12-2018, 07:51 AM
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Weltevreden SA (Dana)
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Big article on the Horsehead & its region from Nightfall in S Africa

Hi Ever'body, Dana in S Africa checking in.

Our online deep-sky journal "Nightfall" has just posted a great piece about the Horsehead and all the other objects near it IC 434, The Flame Nebula, NGC 2023, Alnitak, and the suprising role the multiple star system Sigma Orionis plays in all these. The article is 25 pages, thorough, and beautifully illustrated.

The link is here: https://drive.google.com/open?id=1d1...pTpSqkaJIdL1Bq


=Dana in S Africa
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Old 03-12-2018, 04:18 PM
eiddy (Nick)
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A well written and interesting article. Well worth the read. Thanks for the link.
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Old 30-12-2018, 07:15 PM
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silv (Annette)
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Where's the LIKE-button?
I am reading it bit by bit, like a Christmas cookie I nibble on over days. Sooo fascinating, learning about the gigantic powers wrestling with each other over the course of aeons.
And then looking so harmlessly beautiful in DSO images.

I find, without having any previous astro-scientific knowledge nor inner access to either mathematics nor formulas, I can still enjoy reading this article. I skip the parts I feel too undereducated for, and sentences like this one: "One seemingly feckless star in our eyepieces is responsible for the whole shebang: σ Ori." or these two: "If we were astride the Horsehead, σ Ori would be a stellar dot about as bright as the gibbous moon. If we were on σ Ori looking back the Horsehead would be a round blob larger than the Coal Sack"
make the article accessible and enjoyable even to me. They're pulling me into a "story".

The only other pieces of this kind, scientific yet accessible and belletristic, I ever read were Dana's posting describing Paul's M8 and her words regarding the faint reflecting dust clouds around LMC/SMC. If I may be so blunt: I enjoyed these a little bit more than the Horsehead writeup.

If anyone can point me towards more of this kind of well written, knowledgable DSO literature, I'd be totally grateful!

Thank you for posting this article.
And all the best all around for 2019!
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Old 31-12-2018, 09:11 AM
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Tinderboxsky (Steve)
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Thank you for the heads up Dana. An informative and enjoyable read. There has been a lot of time and effort invested in this paper.
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Old 09-01-2019, 08:03 AM
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Weltevreden SA (Dana)
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To Annette re. more articles like the Horsehead piece

Hi over there, ever'body . . .

I spotted Annette's note in the comments section of the HH in Orion. She asked where there might be more articles like this. Dana De Zoysa and I produce the Astro. Society of S. Africa's online deep-sky journal "Nightfall". It is a quarterly large-format all-colour "magazine" and is filled with articles like the HH piece, plus a lot of general articles such as a recent 150th anniversary tribute to Henrietta Swan Leavitt, the oldest star chart in the world (Chinese, 7th century), and a piece about astronomy typography in the early days of print before Newton. Here are links to all the articles Dana & I have produced since we started October last year:

Nightfall V2#1 October 2017:

Nightfall V2#2 February 2018:

Nightfall V2#3 October 2018:

Special Report #1: The Oldest Star Atlas in the World

Special Report #2: Riding with the Valkyries: O Runaway Stars Observers Challenge

Special Report #3: Magellanic Mystery Solved

Special Report #4: Seeing the Dark

Special Report #5: The Winds of Change are Blowing Over Aquila

The Horsehead piece is part of a 3-piece section devoted to Orion, coming out in our next issue, schedule for later this month. I'll announce it here when we post it.

Hope you enjoy.

=Doug Bullis (& a wave from Dana)
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Old 09-01-2019, 11:07 AM
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Thankyou Dana for sharing.
A wonderful read.
I look forward to the other links.
Happy New Year
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Old 09-01-2019, 11:09 AM
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multiweb (Marc)
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+1 The HH article was very good. Well constructed with great illustrations and in layman's terms. Very cool stuff.
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