Thank you for posting your request on History Hub!
All passenger lists from the port of New York for this time period have been digitized online through both FamilySearch.org which is a free service and Ancestry, which is a subscription service, though may local libraries have accounts which you can access at their branches.
If you can provide more information, such as the names of family members and the ship name, I am happy to conduct a search of the digitized records to see if I can locate a record for you.
Ordering an actual copy of the microfilm is possible, and can be done at our website here:
In the box titled Other Online Research Tools, click on Microfilm Catalog
However, it may be more prudent to search what has already been digitized.
I hope this is helpful in your research!
There was no ship that arrived in NY that was named the Julian during June 1842. This information is from M237 roll 49, which is listed on www.stevemorse.org "One Step" Ship Search Results (stevemorse.org). If you give us the name of your ancestor we can try to help you find them on a passenger list.
According to Ancestry the Julian arrived in the Port of New York on the 17 Jun 1842 from Deutschland.
Microfilm Serial #M237
My ancestor was Elisabeth Philippi and she was 2 years old.
Thank you for your help. It is much appreciated.
Did you look at the remark and link that I'd previously given ...?
Thank you so much for your help.