Very good. I have tried it myself but tracking was very poor. Also the temperature is about 10°C so noise is much more visible. Will give it another try. Clear skies!
Thank you! Keep on! I had many and still have bad sessions. Two weeks ago I shooted the Cocoon Galaxy… The stacked result disappointed me. Out of focus and overall very bad quality (weather was not perfect that evening)… So, one more evening was lost… CS
I see you have used only 120 sec subs for this one. I assume also because the object was lower on the sky and tracking is worse there If I assume correct. BR
Yes, correct. Objects near to Polaris (60-80° declination) have a much shorter orbit on the sky than objects near to 0° declination. And on a shorter orbit tracking errors are less visible.
I use the following exp.times with the 400mm lens (guided!):
0°-40° declination: 120s exp.
40°-50° dec.: 150s
50°-60° dec.: 180s
60°-70° dec.: 240s
Until now this works perfect for me.
Clear Skies
We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
Cookie
Duration
Description
cookielawinfo-checkbox-analytics
11 months
This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional
11 months
The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary
11 months
This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others
11 months
This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance
11 months
This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy
11 months
The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
© 2015-2021. All rights reserved. TERMS OF SERVICE AND PRIVACY POLICY 
5 comments
Very good. I have tried it myself but tracking was very poor. Also the temperature is about 10°C so noise is much more visible. Will give it another try. Clear skies!
Thank you! Keep on! I had many and still have bad sessions. Two weeks ago I shooted the Cocoon Galaxy… The stacked result disappointed me. Out of focus and overall very bad quality (weather was not perfect that evening)… So, one more evening was lost… CS
I see you have used only 120 sec subs for this one. I assume also because the object was lower on the sky and tracking is worse there If I assume correct. BR
Yes, correct. Objects near to Polaris (60-80° declination) have a much shorter orbit on the sky than objects near to 0° declination. And on a shorter orbit tracking errors are less visible.
I use the following exp.times with the 400mm lens (guided!):
0°-40° declination: 120s exp.
40°-50° dec.: 150s
50°-60° dec.: 180s
60°-70° dec.: 240s
Until now this works perfect for me.
Clear Skies
Thanks for this information!