Contact information

Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

The Helping Hand nebula, LDN 1355 / LDN 1377, VdB 9 - 10.12.2019 at 22.00 Hyvinkää Observation number 87756

Visibility IV / V

Timo Inkinen, Ursa (Etelä-Suomi)

The picture shows the dark nebulae LDN1355 / 1377 found on the border of Cassiopeia and Giraffe and at least the VdB 9 reflection fog (on the left side of the brightest star). This project of The Helping Hand Nebula was the "last haystack" on the back of this camel, which cut off my own interest in filming such dim dim sky subjects from Finland's poor star photography.

I started my photography project on September 22, 2019 and filmed faithfully, weather permitting, until December 10, 2019 (eight nights in total), after which I felt I had recovered a pinch of enough photons to this dim nebula. My goal was to shoot more 23 x 5 min single exposures into the luminance channel than now in the final stack, but out of a total of 51 photographed luminance frames, only 23 had even some trace of that dim fog! In the abandoned wasted screens, the transparency of the night sky in that shooting had been somewhere between miserable and inadequate, so that that dim fog no longer separated the glow of the background sky by stretching the image. Thus, I did not consider it appropriate to use all of the described luminescence squares for the final stack of this image.

I did did the infamous description of the weather, the only possible conclusion Finland and I sold completely out of the charismatic 10 "Newton kuvausputkeni and the associated komakorjain / lyhentimen (bring a combination made kuvausputkestani F2.8 charismatic photon-cleaner) and I put the same sales package also fair deep sky photographing QSI CCD Camera There will no longer be any motivation here to engage in ds shooting if the "seemingly clear" shooting evenings of the entire fall (4 months) are spent shooting raw images of one such fog, as was the case with this shooting project.

Thus, a shooting hobby that will be completed somewhat faster will be replaced by such deep sky photography, which is too demanding for Finnish photography. So far I have not regretted my decision at all i.e. every time and hobby should produce joy and not become as laborious and frustrating as it has been here.



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • The Helping Hand nebula, LDN 1355 / LDN 1377, VdB 9
    • Näyttävä
  • Constellation
    • Cassiopeia
  • Field of view
  • 1.2 degrees
  • Weather
    • Kehnoa läpinäkyvyyttä. Loputonta odottamista kelvolliseen kuvaskeliin, jotta saisin kuvattua syyskuussa aloitettuun RGB sarjaan tarvittavat kelvolliset luminanssi-valotukset mukaan. Pöh!
  • Darkness
    • Average
  • Seeing
    • Good
  • Limiting magnitude
    • 4.5
  • Nebulae
    • Dark nebula info

      Dark nebulae are dust in space. It obsruct the visibility of background star and bright nebulae. Thus, the dark nebulae are seen as dark clouds in space.

       

      The Horsehead Nebula is a dark nebula. Image Arto Murtovaara.

       

      The dark nebula LDN 1235 in Cepheus. Image Juha Kepsu.

       

      The dark nebula LDN 1302. Image Tero Turunen.

       

      The NGC 1333 is a reflection nebula, which includes also dark nebulae. Image Samuli Vuorinen.

    • Reflection nebula info

      Reflection nebula is gas only lit up by nearby stars. It should not be mix up with emission nebula, where hot stars nearby cause the gas glow. But then reflection nebulae are visible in the same areas with emission nebulae. The appearance of reflection nebulae is irregular, and many of them need bigger instruments to be visible.

       

      Reflection nebulae are glowing blue around the stars of Pleyades. Image Juha Parvio.

       

      The blue glowing reflection nebula NGC 1333 around the bright star is in Perseus. Image Timo Inkinen.

       

      The bluish reflection nebula NGC 2023 is located lower left from the Horsehead Nebula. The Horsehead Nebula itself is a dark nebula in the front of red emission nebula IC 434. In the left side there is NGC 2024 aka Flame Nebula. Image Samuli Vuorinen.

       

      NGC 7538 in Cepheus is a combination of reflection and emission nebula. Image Timo Inkinen.

       

      Rflection nebulae (LBN 550, 552 and 555) and dark nebulae (LDN 1228) in Cepheus. Image Juha Kepsu.

       

      Reclection nebula vdB 141 in Cepheus. Image Tero Turunen.

Technical information

Functional imaging technology will not help if Finnish shooting environments do not allow such deep bite deep shooting (10 "/ F4 Newton, ASA 0.73x comma equalizer, QSI 583WS CCD, AstroDon LRGB filters = now sold out!)

Comments: 2 pcs
Antti Taskinen - 27.1.2020 at 16.52 Report this

Tosi hieno on kuva! On kyllä varmasti vaatinut kovaa sitkeyttä ja pitkää pinnaa kuvata tämäkin näkymä. On todella harmillista, että syvän taivaan kohteiden taltioiminen on monesti niin hermoja raastavaa hommaa Suomessa. En ole itse edes viitsinyt yrittää kuvata kohteita, joiden taltioiminen vaatisi useita tunteja (= tyypillisesti monta yötä Suomessa). Suurimpina innostuksen hetkinä olen suunnitellut laadukkaamman kuvauskaukoputken ja oikean tähtikuvauskameran hankkimista suotimineen. Sitten olen nopeasti palannut realismiin ja miettinyt, kannattaako kuitenkaan satsata niin paljon rahaa asiaan, jota pääsee tällä hetkellä toteuttamaan ehkä maksimissaan 10 iltana/yönä vuodessa. Muutto suosiollisempien taivaiden alle ulkomaille voisi muuttaa tilannetta radikaalisti, mutta nyt on vaan mentävä säiden armoilla ja keksittävä jotain muuta tekemistä.

Timo Inkinen - 28.1.2020 at 18.32 Report this

Kiitos! Ei tuo tähtikuvaaminen ole koskaan ollut taloudellisesti kannattavaa sen vaatimien laiteinvestointien takia ja viime aikoina on sumukohteiden taltioimisesta saatu mielihyväkin häipynyt taustalle, joten siirrän jatkossa oman mielenkiintoni näistä todella syvän taivaan kohteista lyhytaikaisempiin kuvausprojekteihin.

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